When you get into a serious relationship with someone, you want to believe that they’ll be loyal to you.

However, that’s not always the case. Some people think nothing of betraying their partners by cheating on them. The good thing is that they often give off major warning signs long before things ever get to that point. If you notice any of these red flags, you’re better off staying very far away from them.
1. They keep emotions at arm’s length.

They may chat easily about everyday things, but when it comes to deeper feelings or future plans, there’s a bit of distance. It’s almost like they’re careful not to get too attached. It’s no wonder their partners often end up feeling as if they’re only seeing part of who they really are.
2. They’re drawn to thrill over steadiness.

For some, the excitement of something new feels more appealing than a steady, reliable connection. When stability starts to feel dull, they may start looking around for ways to recapture that initial spark. It doesn’t necessarily mean they’ll wander, but it might make commitment feel limiting to them.
3. Privacy and secrecy blend together.

While everyone’s entitled to personal space, they may hold back more than expected, keeping parts of their life separate. There’s a difference between privacy and outright secrecy, and this can sometimes leave their partners wondering where they really stand.
4. Their past relationships seem short-lived.

If they tend to bounce from one relationship to another, it might hint that they’re more comfortable in the initial stages of romance. Long-term commitment brings challenges that not everyone is ready to handle, and a string of brief relationships can sometimes be a clue that they prefer keeping things casual.
5. Flirting feels like second nature.

A little charm can be harmless, but if they’re often flirtatious, it might be a sign they enjoy attention from multiple sources. That doesn’t automatically mean they’ll be unfaithful, but it could suggest that they like keeping connections open, which might be tricky in a committed relationship.
6. They’re casual about past slip-ups.

If they talk about past infidelities as though they were just “mistakes” or downplay them altogether, it could be something to watch. How someone reflects on past actions can say a lot about their mindset. Sometimes, a casual attitude about past missteps can be a sign they see infidelity as something that just happens.
7. They enjoy keeping secrets.

For some, there’s a bit of excitement in having things nobody else knows. This isn’t necessarily about being unfaithful, but when someone finds a thrill in secrecy, it can sometimes make boundaries less clear. It’s more about enjoying the mystery, even if it’s unintentional.
8. Their attention shifts easily.

If they’re quickly drawn to new people or situations, it might be more about their personality than any intent to stray. Still, being easily captivated can make it harder for them to settle in one place. Their restlessness isn’t always a problem, but it might affect how solid their commitments feel over time.
9. They keep certain details vague.

When discussing past relationships or even current interactions, they might leave out specifics. It’s not necessarily suspicious, but a consistent lack of clarity can sometimes make it feel like there’s more going on. Vague details can create a sense of distance that might feel unsettling to their partner.
10. They thrive on external validation.

Everyone likes a little appreciation now and then, but if they seem to need validation from outside their relationship, it might make things tricky. A strong desire for external attention can sometimes pull focus away from their partner, which may cause strain if left unchecked.
11. They avoid labels and commitments.

Even when they’re in a relationship, they might steer clear of terms like “exclusive” or “committed.” For some, keeping things undefined feels freeing, but it can make their partner wonder where they truly stand. It isn’t necessarily about unfaithfulness, but it can make a relationship feel less secure.
12. They seem to have a “grass is greener” mentality.

They might often wonder if there’s something better out there, and that can sometimes mean they’re not fully invested. While curiosity is natural, constantly looking for the next best thing can take their focus away from the present. This mindset can lead to a bit of a wandering eye, even if they don’t act on it.
13. They enjoy attention from multiple sources.

They might not actively try to get attention, but they’re certainly comfortable receiving it. Whether it’s friends, colleagues, or strangers, they’re open to interactions that keep them feeling appreciated. Their behaviour doesn’t always spell trouble, but it might indicate a preference for keeping their options open.
14. They dislike routine in relationships.

Routines can feel restrictive for some, and they may feel stifled by the predictability of a committed relationship. Instead, they might look for ways to keep things spontaneous, sometimes in ways that push the boundaries. The need for variety can make staying loyal feel challenging if they crave constant change.
15. They’re resistant to transparency.

Even with simple things, they may be hesitant to share details, whether it’s about their day or who they’re texting. It might just be a personality trait, but a consistent reluctance to be open can create an atmosphere of uncertainty. Their partner might feel like they’re always guessing, which can slowly chip away at trust.