Knowing how to tell if your girlfriend is cheating can take a bit of detective work, especially if you want to (and should)take the high moral road and avoid invading her privacy. The below signs, especially when several show up at the same time, are the best hints you’re likely to get.

However, while all of these signs make a cheating girlfriend more probable, none of them offer definitive proof.

It’s important to point out that none of these signs she’s cheating makes it a sure-fire certainty that she is actually cheating, or even looking to cheat. There are perfectly innocent reasons she might act in any one or several of the ways listed above.

Flirting doesn’t come naturally to a large number of people in the world. Though there are a few who can bat their eyelashes or send off a brief but powerful text message without thinking about it, flirting isn’t second nature for most. Many people sit down and think really hard about what the perfect thing to say is. Is this text message too long? Is it weird if I look into her eyes? Am I coming across as genuine when I tell her I like her purse?

Almost nothing about dating is easy, and one of the trickier aspects is the little things. The sweet things. The little compliments or hellos that can make someone’s day. But there really are plenty of little compliments you can send to the person who’s on your mind. Don’t overthink it, and consult this list for a few ideas.