Ever curled up for a cozy night in, only to have the “C” bomb (cheating, duh) float into your head?  We all build these amazing relationships brimming with trust and love. The thought of someone breaking those promises? Gut-wrenching.

But guess what? Infidelity is a sneaky beast that can creep into even the best relationships. So, if that nagging feeling just won’t quit, there are actually some red flags to keep an eye out for.

No, this isn’t about turning into a detective (trust me, been there, done that), but about being empowered! 

This post is your guide to the most common signs guys might show when they’re, well, not exactly boyfriend material.

No need to wonder how to tell if your boyfriend has slept with someone else anymore! You’ll learn the ins and outs of spotting a potential cheater, how to handle the situation, and when it’s time to say goodbye.

Signs he is sleeping with another woman: Watch for these red flags

Love and trust are the cornerstones of any healthy relationship. But sometimes, that trust gets shaken by the unwelcome visitor: infidelity.

Now, statistics can be a downer, but here’s one that might surprise you: studies suggest a whopping 74% of men have considered straying if they thought they could get away with it.

This doesn’t mean all men are ticking time bombs, of course! But it does highlight a crucial point: if you wonder how to tell if your boyfriend has slept with someone else, your gut instinct might be right.

The interesting thing about cheating is that, despite the best efforts, it’s almost impossible to hide. Why? Because human connection is a complex web. 

We communicate not just with words but with a symphony of emotions, micro-expressions, and even physical changes. These subtle cues, often subconscious, betray our true thoughts and feelings.

And if you can spot and decipher these cues, you can tell if your partner is sleeping with someone else.

So, let’s explore some emotional, behavioral, and physical signs that scream “Cheater!” and what to do about them.

Emotional signs that your partner is sleeping with someone else (with explanation)

  1. Remember those evenings spent in deep conversation, sharing every detail of your day?  Suddenly, starting a conversation with your partner feels more like pulling teeth than an enjoyable experience. This emotional withdrawal is a potential indicator that their energy is directed elsewhere, possibly towards someone new.
  2. Does a new name keep popping up in conversation – a coworker they “absolutely must” meet for lunch or a gym buddy with suspiciously convenient timing? Chances are, this person is more than just a friend.
  3. Intimacy often takes a nosedive when infidelity enters the picture. Cuddles become a distant memory, and their once-enthusiastic touch feels…well, absent. This shift in physical connection can be a confusing signal that something has changed emotionally.
  4. Out of the blue, your partner has transformed into your personal critic, scrutinizing everything you do, from your outfit choices to the way you fold the laundry. This barrage of criticism could be a way for them to create emotional distance and justify their behavior.
  5. Noticed your partner’s been away from home more? Like, working late a lot or suddenly or going to corporate events? Could be they’re looking for a bit of space from you.

These are just a few emotional red flags that might indicate trouble in paradise. It’s important to remember that each relationship is unique, and these signs could have other explanations. However, if you notice a combination of them or feel something is off in your relationship, it might be time for an honest conversation with your partner.

Behavioral signs that your partner is sleeping with someone else (with explanation) 

1. Sudden change in routine

Ooh, late nights and weekend “work emergencies” cropping up like clockwork? That can definitely raise an eyebrow. 

And don’t even get me started on those little white lies about where they’re headed or who they’re hanging out with. That could be a sign they’re hiding something bigger, something they don’t want you to know.

2. Emotional distance

We all have our moods, but pay close attention if your partner’s whole demeanor towards you takes an abrupt, unexplained turn.

Less affection, more distance, moodiness, even open hostility—these dramatic behavioral changes could signal that something’s seriously amiss in your relationship.

3. New friends or interests

Partners are allowed to have friends and pursue interests, of course. But if your loved one suddenly has a whole new circle of friends you’ve never heard of or random hobbies they’re pursuing in secret, it might be because they’re trying to create space in their life to nurture an affair.

4. Secrecy

When the person who used to share every detail of their day with you happily starts dodging questions about their plans, whereabouts, or who they were with, that cagey, secretive behavior could mean they’re hiding a big, terrible truth.

5. New looks

Does your partner seem to be putting significantly more effort than usual into their appearance lately? New on-trend wardrobe from out of nowhere, ramped up makeup routine, or hitting the gym way harder? As harmless as it might seem, they could be dolling themselves up to catch someone else’s eye.

6. Work, work, work

Maybe they’ve always been a hard worker, but suddenly they’re just working crazy, inexplicable hours or traveling for business way more than ever before. This increased time away from home, with vague explanations or resistance to discussing details, can be a red flag.

7. Slow fade

This one’s hard because it can happen so gradually. But if you’re noticing your partner is just…checking out of your relationship, it’s a huge red flag.

Less interested in being intimate, making time for dates or quality time, or even just hearing about your day? That emotional disconnect could mean their heart is wandering.

8. Gut feeling

At the end of the day, you know your partner better than anyone. And if your intuition is screaming that something ain’t right, that your partner is up to no good and hiding a big secret, don’t ignore it.

Our guts are rarely wrong, especially about the people closest to us.

Tip: if you think your partner might be cheating, don’t jump into confrontation mode just yet. Instead, start by collecting some evidence to support what you’re feeling. This way, if they try to deny it, you’ve got something solid to show. Also, chatting with close friends or family members about what’s going on can be super helpful. They might have some good advice on what steps to take next.

9. Love bombing

If your introverted partner starts showering you with constant attention, compliments, and gifts? That’s a red flag. They’re either feeling super guilty for cheating or trying to keep you happy, so they get away with it (again) in the future.

Have you expressed concern about their behavior lately? If they’re suddenly acting like the most attentive boyfriend or girlfriend in the world, take notice. That might be their way of saying, “I’m not cheating! You are my number one!”

10. Defensiveness

If your SO is acting defensive or accusing YOU of being paranoid even when you’ve just asked a simple question like, “Hey, where were you last night?” that’s another classic red flag.

It’s a way for them to deflect from the truth and make you feel bad for even asking. Don’t back down—keep digging for answers. Your peace of mind is worth it.

12. New spending habits

The sudden appearance of credit card bills for expensive restaurants, hotels, or gifts that you never received? Your partner’s been splashing out on someone else. (Check your bank statements too!) Frequent cash withdrawals?  They could be trying to hide financial evidence or fund a secret life.

13. Single…on social media

When your SO start listing themselves as single on social media, deleting tagged photos of you two, or untagging themselves from snaps? That’s a major red flag. They may be trying to project a certain image to someone else—and it ain’t one of commitment.

If they don’t have a social media account but suddenly made one? They could be using it to meet and message others. Trust us—this is not a coincidence.

14. Isolation

This one is not about them but you. Cheating partners often try to isolate their significant other from close friends and family. It’s a way for them to control the narrative, prevent others from finding out what they’re up to, or even hide an affair under the guise of “working late” or “spending time with friends.”

Notice if your loved one has been actively discouraging you from spending time with others or making excuses not to go out in public together.

15.  Filled with joy

You know your partner. You can sense when they’re genuinely happy (or not). And if they’re suddenly in an unexplained good mood or more excited about things than usual? It might be because their heart is somewhere else. They sing while brushing their teeth…all of a sudden? Big smile over breakfast? That’s suspicious.

We’re not saying they should be miserable all the time, but drastic changes in behavior like this should raise a red flag. It could be that they’ve found joy and excitement in someone else, not you. 

16. Blaming you

When your partner starts accusing YOU of being unfaithful? That’s a tactic to redirect the focus from them and make you feel guilty. Don’t fall for it—it could be a sign that they’re projecting their own behavior onto you. Bottled-up guilt is often the root cause of this behavior.

15 Physical signs he just slept with someone else

1. He can’t have sex with you

Literally. If you’ve been wondering how to tell if a guy has had sex recently, it’s pretty simple. Some men might be able to put on a good show, but most are exhausted after having sex with someone else.

The most common reason for this is the release of dopamine and serotonin during sex.

These hormones are responsible for feelings of satisfaction and happiness.

But they can also lead to exhaustion or even a temporary refractory period where a man physically cannot have an erection or ejaculate again.

So, if he’s “not in the mood” or “too tired,” there might be a third person in the picture.

2. His kisses don’t feel the same 

Looking for signs he is texting with someone else or still in love with his ex? That’s all about how he kisses you.

When a man is aroused, the blood rushes to his lips (and other parts 😉). This increases their sensitivity and makes kissing more stimulating.

However, if his lips feel like they’re not even there and he’s just going through the motions, someone else gets his blood flowing.

Things are even worse if he avoids kissing you like he used to and gives you only a peck.

It’s heartbreaking. He might pretend he’s tired or not in the mood, but deep down, you know there is more to it.

You know him more than anyone else, and when it comes to something as intimate as kissing, you can tell when there’s something off.

3. He lost interest in being your hero

Deep-seated biological impulses drive men.

They don’t consciously choose these urges, much like how attraction isn’t a matter of choice.

These instincts have developed over 100,000 years and now influence his actions.

Labeling someone as lazy or lacking drive seems like a simple way to explain why you feel he’s not as into the relationship as he used to be.

Yet, this behavior could be a significant physical indicator that he’s involved with someone else.

The reason is he no longer desires to be your Superman. He’s already become someone else’s savior.

4. He’s not turned on by you

Even the most skilled cheater struggles to fake physical attraction when it’s not there. So, it’s wise to keep an eye on his body language and actions—they might just reveal he’s seeing someone else. Here are some tell-tale signs he’s being unfaithful and trying to keep it from you:

  • He sweats a lot around you without any reason.
  • He maintains distance and shies away from making eye contact.
  • He seems awkward or uncomfortable if you touch him.
  • He either laughs off or stays quiet when you make romantic gestures or comments.

These behaviors can really sting. Even when a guy tries to conceal his unfaithful tendencies, these tendencies often give him away.

5. He’s too tired…always tired

Your guy might have just gotten a promotion or is climbing the corporate ladder, but he’s always so tired. It’s not just after work or in the evenings…

It’s like he’s constantly worn out, even more so when it’s time for some couple’s intimacy or just being together.

He’s there, yawning away, pretending he’s too exhausted, stretching his back, and sleeping in more than usual.

This could be a big sign he’s seeing someone else on the side.

Maybe it’s because he’s too busy with another if you know what we mean…

And then, those long showers he takes make you wonder what’s really going on.

6. He invests more time and effort into his looks

You might be seeing a really good-looking guy.

But if he starts changing his looks and gets even more attractive, you’ve got to think about a couple of things.

Why is he suddenly dressing up and caring about his appearance so much if he’s not doing it for you, especially if he never cared much about grooming before?

Usually, the reason is pretty simple: he’s sleeping with someone else or he’s really hoping to get with another woman.

7. He’s taking more showers and doing extra laundry

Smart cheater might head to the laundromat with a bunch of their extra dirty clothes and get all the evidence washed away.

Yet, most people who are trying to hide something prefer doing their laundry at home.

If he thinks you’re clueless, he might just sneak some extra underwear and socks into the wash, hoping you won’t spot them.

Or maybe he’ll dash to the basement to run a few more loads that got dirty from his secret rendezvous.

It could be he’s hitting the gym more, which might explain why he’s been so tired lately.

But there’s also a chance he’s sneaking around, getting some action on the side, and trying to keep it from you.

8. It seems like he can’t talk

Another dead giveaway that he’s got someone else on the side?

He suddenly can’t seem to get his words out right.

He’s stuttering, tripping over his words, and sometimes just stops talking mid-sentence… What’s up with that?

Is he just forgetful, or is he nervous and anxious?

It’s probably the latter.

A big reason he might be all jittery and forgetful is because he’s distracted, thinking about having sex with someone else.

9. He’s not turned on by things he used to love

Another clear sign that he might be sleeping with someone else is if the things that used to turn him on in the bedroom don’t work anymore.

If he used to be really into something—be it oral, anal play, or anything else—and now he just doesn’t care, it’s worth wondering what’s changed.

People don’t just lose interest in things they’re passionate about overnight.

There could be other stuff happening in his life, sure. But it’s also possible he’s found someone else who’s into the same kinky stuff he is.

10. He’s acting all mysterious around you and everyone else

Your boyfriend might be keeping things under wraps around you and others because, well, he might actually have something to hide.

People who are cheating often feel guilty and really don’t want to get caught.

If he’s being super secretive around you and others, keep an eye out. Does he quickly hide his phone screen when you walk into the room? This could be a clue he’s sexting someone else.

If you ask him about his dinner with colleagues and he gets all vague, that’s another red flag.

And if he says he needs a weekend away but is sketchy on the details like why or where, that’s the kind of secrecy that often means he’s covering up an affair.

11. He smells different

Smell is one of the most powerful senses humans have, and there’s a reason for that.

Scent can tell us a lot about someone’s health, hygiene, and even emotions.

So, if your man starts smelling differently than he usually does, it could be because he’s having sex with someone else.

Maybe his shirt smells like perfume or cologne you’ve never smelled before.

Perhaps he’s been wearing a different kind of deodorant or soap. Or maybe you just notice an unfamiliar scent on his skin when you’re being intimate.

Senses don’t lie, and if yours are telling you there’s something off about his smell, it is worth investigating.

12. He doesn’t hold hands with you

Sometimes, a little gesture can tell you a lot about what’s going through someone’s head.

In this case, we’re talking about hand-holding.

Hand-holding is an intimate act that is often reserved for romantic partners.

It’s something couples do when they’re out in public or just lounging on the couch together.

If he used to love holding your hand and now avoids it like the plague, it could be because he’s trying to hide something.

Maybe he doesn’t want you to feel his sweaty palms or chapped hands from touching someone else.

Or maybe he just doesn’t want you to get too close and catch a whiff of another woman on him.

13. He cleans his place more than usual

It’s not uncommon for people to tidy up a bit when they know they’re having guests over.

But if your boyfriend starts cleaning his place more often and more thoroughly, it could be because he’s getting ready for someone else to visit.

Maybe he’s making sure the sheets are extra clean, or there aren’t any stray hairs that might give him away.

Whatever his cleaning routine is, if it’s suddenly ramped up, that could be a sign he’s trying to hide something from you.

14. He’s obsessed with his phone

Most of us are glued to our phones for a good portion of the day.

But if your boyfriend suddenly becomes super protective of his phone or constantly checks it and texts someone else, that’s a bad sign.

He doesn’t leave his phone on the table like he used to, and he’s always making sure it’s locked or out of your reach.

He might even sleep with it under his pillow.

If this is happening, it could be because he doesn’t want you to see any incriminating messages or calls from another woman.

15. He wears accessories he didn’t have before

Especially cheap hand-made jewelry, which is often a sign that someone has been with another woman.

It happens all the time: A guy gets caught cheating, and his excuse is that he “found” a ring or bracelet somewhere and liked it so much he just kept it.

In reality, if you see this type of thing on him and it hasn’t been there before, it could be a gift from his other woman or something that has sentimental value to him.

This is especially important if he starts wearing jewelry out of the blue.

Conclusion

If you think your partner might be cheating, it’s smart to do a bit of detective work. Watch how they’re acting – are they staying late at work more than usual? Seeming a bit distant or lost in thought? Ignoring what you need? These could be signs something’s up.

If you’re worried about where things stand, have a chat with them. Being open and honest is key in any relationship. And if it turns out they have been cheating, you’ll need to think about what you want to do next. Whether that’s working things through or saying goodbye, that’s your call. Thanks for reading!

FAQs about Cheating

How to know if he’s cheating on me?

If you’re wondering whether your partner might be cheating, there are a few things to look out for. Have they started spending more time out and about without you? Or maybe they’re being super secretive with their phone or laptop. Cheating can really shake up your relationship, so if things just don’t feel right between you two, that could be a red flag. If you’re worried, the best move is to talk with them about it. Share your feelings and see how they respond. Being honest with each other is key in any relationship.

I think my partner is cheating on me, what should I do?

If you’re worried that your partner might be unfaithful, here’s what you could do. Start by having a chat with them about what’s bothering you. If they’re open and honest, they’ll help calm your worries. But, if they dodge the topic or don’t want to discuss it, it might be a red flag. If that happens, you might think about doing a bit of detective work yourself to find any signs of cheating. This could mean peeking at their phone or email, checking out their web history, or even tailing them a bit to see if they’re really going where they say they are.

What are some signs my partner is cheating on me?

If you’re worried your partner might be cheating, there are a couple of clues to watch out for. For starters, if they’re hanging out less at home or often working late without a solid reason, it might mean something’s up. Also, if they start being all secretive about their phone or laptop, or if they’re not as into cuddling or kissing as before, those could be red flags, too. If you’re seeing these kinds of shifts, it’s important to sit down and chat with them about what’s going on. Remember, being open and honest with each other is a big part of any healthy relationship.

My partner cheated on me. Should I forgive him?

It’s a tough call. Forgiving someone who has cheated on you is a very personal decision that only you can make. Everyone’s relationships and circumstances are different, so there’s no one-size-fits-all answer here. Think about what you want in your relationship and whether or not forgiving them aligns with those goals. If it does, then it might be worth giving them another chance.

How to know if he’s cheating on me?

If you’re wondering whether your partner might be cheating, there are a few things to look out for. Have they started spending more time out and about without you? Or maybe they’re being super secretive with their phone or laptop. Cheating can really shake up your relationship, so if things just don’t feel right between you two, that could be a red flag. If you’re worried, the best move is to talk with them about it. Share your feelings and see how they respond. Being honest with each other is key in any relationship.

I think my partner is cheating on me, what should I do?

If you’re worried that your partner might be unfaithful, here’s what you could do. Start by having a chat with them about what’s bothering you. If they’re open and honest, they’ll help calm your worries. But, if they dodge the topic or don’t want to discuss it, it might be a red flag. If that happens, you might think about doing a bit of detective work yourself to find any signs of cheating. This could mean peeking at their phone or email, checking out their web history, or even tailing them a bit to see if they’re really going where they say they are.

What are some signs my partner is cheating on me?

If you’re worried your partner might be cheating, there are a couple of clues to watch out for. For starters, if they’re hanging out less at home or often working late without a solid reason, it might mean something’s up. Also, if they start being all secretive about their phone or laptop, or if they’re not as into cuddling or kissing as before, those could be red flags, too. If you’re seeing these kinds of shifts, it’s important to sit down and chat with them about what’s going on. Remember, being open and honest with each other is a big part of any healthy relationship.

My partner cheated on me. Should I forgive him?

It’s a tough call. Forgiving someone who has cheated on you is a very personal decision that only you can make. Everyone’s relationships and circumstances are different, so there’s no one-size-fits-all answer here. Think about what you want in your relationship and whether or not forgiving them aligns with those goals. If it does, then it might be worth giving them another chance.

By Kyle Brady

Kyle Brady is a seasoned author with a profound understanding of relationships and the complexities of human interaction. With a keen insight into the dynamics of trust and fidelity, Brady specializes in guiding individuals through the challenging terrain of suspicions and infidelity. Through his work, he empowers readers with knowledge on catching cheaters, fostering healthier connections, and reclaiming personal integrity.

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