What should I do when the guy is with the baby momma and with me

Ummm... leave. Unless you don't mind being used.

Well let me see
1. put up with it
2. let the baby moma move in and be one big happy family
3. leave the jerk before you are the baby moma number 2 or 3.

If I were you I would find another guy who isn't going to string you along and use you.

Yeah I agree leave him, he isn't worth it

Leave him or be the other women, or one of many other women.

If he's with another girl how do you know he's not going to get you pregenaunt and have another girl on the side like he did with you get it