17 Hard-To-Hide Signs to Tell if Two People Are Sleeping Together

If you are wondering how to tell if two people are sleeping together, it’s not that difficult. Here are all the signs you should look for to know for sure.

how to tell if two people are sleeping together

Body language is powerful. If you’re wondering how to tell if two people are sleeping together, body language will tell you everything you need to know!

You can tell a lot by someone’s body language. In many ways, a lot more than the words they say.

For instance, you can easily tell someone is angry when they’re telling you nothing is wrong, or if someone is spinning you a lie. And you can tell if someone is upset and not keen to tell you why.

[Read: 23 intense signs of unspoken mutual attraction between two people]

How to tell if two people are sleeping together

Surely, this is private. Why would anyone else need to know? Well, if you’re like me, you’re interested in these things! Perhaps you want to know what’s really going on with a friend and someone you don’t trust so much, and they’re telling you nothing.

[Read: How to tell if there is serious chemistry between two people]

Maybe you want a little low-down on the situation between two former lovers who seem quite close again. Whatever your reason for wanting to know how to tell if two people are sleeping together, there are several clues.

1. They seem slightly closer in general

You’ll get it. You won’t even need to look, they’ll just stand a little closer than normal, almost like an invisible piece of string is pulling them together.

Learning how to tell if two people are sleeping together can be as easy as watching the distance they keep between one another, or the distance they don’t keep.

You can also tell when they’re sleeping together but they’ve had a fallout, as the distance will change! Learning to understand body language overall is a great tool and skill. It will also help you in many other situations in life too. [Read: How to tell if there’s serious chemistry between two people]

2. Look out for the lingering looks

Can you see looks that last for just a second or two longer than normal? That’s a surefire sign that something a little deeper than friendship is going on. Things have probably progressed to another level.

These looks may be fleeting, literally half a second more than usual, but they’ll certainly be there if two people have done the deed.

Be careful not to stare while looking for this sign. A quick glance will give you all the information you need!

3. They seem super-comfortable touching each other more often

Everyone playfully touches another person from time to time, usually as a joke, but if you notice two people doing it more often, perhaps when they never did before, this is a sign that something is going on between the two of them.

For instance, a graze against the side might seem innocent, but the side of someone’s body is a sensitive spot.

If someone is constantly touching that area and the other person isn’t flinching in shock or laughing because it tickles, the chances are that they’re used to this person touching them! [Read: Types of touches – The 36 physical touches we subconsciously use and what they mean]

4. They suddenly become very protective of one another

Men become protective of someone they’ve slept with. Simply, their protective instincts kick in. Women are the same in a less obvious way.

A woman might be seen silently watching what is going on when someone is talking about their sleeping partner, interjecting when things seem to be going too far. A man might confront the person who may be speaking about their partner.

If you haven’t noticed them ‘sticking up’ for this person in the past, that might be a good pointer toward what is going on behind closed doors. [Read: How people flirt by touch without realizing it themselves]

5. They seem to communicate in a secret language

Do they suddenly seem to have a new way of communicating? It could be a look or a joking language they come up with. You’ll know because it’s different from anything you’ve seen from them before.

They’re not likely to be at the finishing each other’s sentences stage, but you may notice them taking more interest in what the other one is saying. They will also communicate nonverbally, with looks and eye contact.

6. You will see them together more, at unusual times

Are you still wondering how to tell if two people are sleeping together? If you spot them out and about together at very strange times, the chances are they’re meeting up for something for more than a quick chat!

For instance, you see them out together early in the morning, that’s a pretty clear sign that they spent the night together. Equally, if you see them wandering around late at night, you should question why, and where they’re going.

7. They suddenly have more to say about each other

If you notice that the other person’s name is cropping up in conversation a lot more than before, the chances are there’s something going on, or they have developed a crush.

And if you call them out on it, asking why they’re talking about the other person suddenly, they’re likely to start fumbling over their words. If this happens, that’s a definite sign that they’re sleeping together and don’t want anyone else to know! [Read: 15 obvious flirting signs between a guy and a girl]

8. They tease each other more

If you notice that they are purposely annoying or teasing the other person, that could be their form of flirting. They do it to provoke a reaction from the other one, and they think they’re being sly and no one else notices. 

They might think that other people will think they don’t like each other when they do the little insults between them. But usually, they’re not fooling anyone because it’s pretty obvious.

9. They carefully choose their words

When you ask them what they’re doing this weekend, they will hem and haw and try to purposely choose the words they say. It doesn’t just flow out naturally like it would with anyone else.

The reason for this is that when someone is trying to hide something, they have to purposely choose to speak in a manner that will cover up what they don’t want people to know.

So, watch their speech patterns and see if they’re trying too hard to come up with the right words. [Read: 16 well-hidden signs you’re not the only one she’s sleeping with]

10. Smiling and happy all the time

Sure, people smile for all kinds of reasons. But if they are overly happy and smiley when they are together, that is a huge sign that they could be sleeping together. They will appear to be flirting or trying to impress each other by smiling and laughing.

Beyond just the normal smile and laugh, you might catch them giving each other a “knowing smirk.” In other words, it’s that kind of smile you have when you have a secret between you and another person.

11. Avoiding each other

On the flip side, maybe they go to the opposite end of the spectrum and avoid each other more than usual. If you suddenly notice that they aren’t in the same place at the same time, then they probably don’t want to give out any hints.

They think that by avoiding each other, people will not be able to observe their behaviors and interactions. However, they might go too far and it might have the opposite effect. [Read: 21 signs to know if he’s texting another woman behind your back]

12. Changed behavior

If someone is naturally flirtatious but suddenly isn’t around a certain person, that could also be a way they are overcompensating for their secret that they are sleeping together.

If one or both of them suddenly seem shy around the other, that’s a big sign.

Or, if they used to have lunch together at work all the time, but now they suddenly changed their habits and aren’t, they could be sleeping together. This is another avoidance technique to throw people off so they hopefully won’t notice.

13. Feeling like the third wheel

If you get the feeling that you are kind of the odd person out when you are with the two of them, then that might be a sign that they are sleeping together. It’s not intentional that they are making you feel that way, it’s just because they are very into each other.

So, pay attention to whether or not you feel like you are “intruding” on two lovers’ intimate moments. If your instincts are saying you are, then you probably are. [Read: Being the third wheel – 32 perks, annoyances and how to survive being one]

14. The goodbye hug

Keep your eye on how they hug each other when they part ways. Most people who are having sex with each other hug a lot longer than just a normal, casual, friendly hug. The girl might rest her head on his shoulder or chest. 

Also, they will hug every time they say goodbye too, which is different from a friendship. And they will linger with it longer than they normally should. [Read: Romantic hug vs Friendly hug and how to instantly tell the difference]

15. Change in their appearance

If you notice that one or both of them are suddenly taking much more interest in how they look lately, then there is a reason. They want to look good for someone, and it’s not themselves.

So, if you see that they losing weight, dressing in nicer clothes, or wearing cologne or perfume *when they normally don’t*, then that’s because they are trying to impress someone else. [Read: 23 signs to know if someone is thinking of you sexually and desires you]

16. Arriving and leaving around the same time

If you’re just watching them from a distance, then it might not be obvious that they are together. But if you are observing them in the same place for a while, you will notice that they show up and leave at very similar times.

Now, that doesn’t mean that they walk into the same place together, because that would be too obvious. So, they try to fool people by having one go in first, and then the other one follows. They try to look like they weren’t just together, but they probably were. [Read: How do affairs start? The way they play out in real life]

17. Looking at their phones at the same time

If you’re in a group – whether it’s with friends or even a business meeting – they might both be looking at their phones at the same time. And they might even look up from their phones at the same time too.

You might even catch them making eye contact across the room or smirking at what they were texting each other. That is because it’s “their little secret” and they’re trying to pretend they aren’t talking to each other.

Why do you want to know?

There are many reasons why you might want to know how to tell if two people are sleeping together, either because you’re curious or for a deeper reason altogether.

Are you pleased about it? Or does it fill you with worry? For instance, do you suspect your friend is hooking up with someone who is only going to mess them around? Do you know your friend well enough to realize that if they start sleeping with someone, they’re going to develop feelings they don’t need right now? [Read: 12 signs of emotional infidelity that could lead you to a real affair]

Despite the fact that we all want to know the latest gossip, it’s equally as important to realize that this is someone’s private life. While you can observe and look for yourself, don’t go telling other people on their behalf!

Of course, it could mean you have designs on someone, and you want to know whether they’re free or not.

If you see just one sign, that doesn’t necessarily mean the uglies are being bumped together. But if you see several, the chances are high. We all tend to act a certain way when we’re intimate with someone else.

When we’re around that person, it’s almost like an invisible piece of string has appeared, pulling you together. This happens even when whatever is going on is casual. Sex is intimate. Whether you want your feelings or your pride to get involved or not, it almost always does.

[Read: 20 subconscious signs of attraction that show up between two people]

If you’re trying to find out how to tell if two people are sleeping together, look for the above signs. Be sure you see more than two or three signs if you want to be sure of the answer!

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Nicky Curtis
Nicky Curtis
Having stumbled from one relationship drama to another throughout her 20s, Nicky is now somewhat of a guru in the crazy world of life and love. Telling it how i...
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