Im still really good friends with almost all of my ex's friends. So I'm hangin out with them a lot and he is there sometimes. Whenever I even flirt a little bit with any of them he gets really mad and jealous and is really quite. But then he does the same to me trying to flirt with my friends or brings over a girl with him. We both know that what were doing makes each other mad. All I have to ask is what is going on does he still like me or what do you think?

I think that both of you should stop playing these games with each other. If you cared about each other, you wouldn't purposely provoke each other. If you respect him, stop flirting with other guys. What you are doing right now shows immaturity, irresponsibility, and downright disrespect for each other- not a good or healthy relationship.
If you both care about this relationship, and each other, sit down and talk about why you both act this way.

I think you both are acting immaturely. Playing games with each others emotions instead of communicating, no wonder this relationship didn't last.

I still keep in touch with my ex's too but I don't flirt with them. In fact, it's as though we were never together and we've always just been friends, which is great and if you can keep it like this, it works fine but you're obviously trying to make him jealous and will only interfere with your relationship with your current boyfriend, so I agree, stop playing games and you would find, he would stop flirting with your friends too and maybe doesn't even really want to but feels 'what's good for the goose is good for the gander'.