Do not flirt when you’re in a relationship.

Just don’t. I mean if you’re in a relationship, it’s not cute or funny in any way for you to go off and flirt with someone else. You’re with someone who is possibly hurting or jealous, because you go off and do such things. Sometimes, this person you’re with will say it’s okay, but it’s because they put up with it, only because they adore you to pieces, they love/like you a lot.