My boyfriend won't act right for nothing and I cheated on him but that's CZ he cheated on me. and the last night we got back together and promised not to cheat but today I found out he's dating another chick and they have been dating for three weeks now and I'm just finding out. this will be his fourth chick now that he's cheated with and I don't know what to do. there's this nice guy who wants to date me but I don't want to open a new book with out closing the other, so what should I do?