I need advice on relationship problem. Need advice NOW please!!?

Very common situation and there may be no going back to the way things were since both of you have dated (or had with) other people and also broken each other's trust and also realized that life without dating each other is actually not that bad. I would actually recommend staying broken up. But don't have with him, he has a girlfriend. He should either break up with her and get with you or leave you alone. You might like dating other people....or just be single for now.