I call it "fear of losing you"

Do not flirt when you're in a relationship. Just don't. I mean if you're in 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's possibly hurting or jealous, cause you go off and do such things. Sometimes this person you're with will say it's okay, but it's cause they put up with it, only because they adore you to pieces, they love you a lot, and don't want to lose you.

Truth is, I get jealous easily because what's mine is mine. I'm stubborn as hell, I say sorry too much. I act like I don't give a fuck because I care too much. I over analyze the smallest of things.