Always falling for taken men : what's wrong with me?!

When I was actually done with crying over this guy whom cheated on his gf with me (yes, I know) and when I realized that I'm not gonna die over him, I think I am falling for another guy who is in a relationship 😑 I have this guy who keeps asking me out (he's nice and he really likes me) but I don't want to go out with him.
Why do I always seek troubles?! I know I will hurt myself again, why am doing this?! Am I crazy?