OK me and my boyfriend got together in January I had just got out of a relationship 3 months prior. I had let my ex borrow 4,000 dollars before we had broke up and he was to pay me back every two weeks until he paid it back. I got with my current boyfriend and I never told him about my ex borrowing the money and paying me. Well I had confided in a friend about the situation and about 2 months later she had opened her big mouth and it got back to my current boyfriend. We had got in an argument about something and he told me that he knew that I was talking to my ex etc... I tried to explain the situation to him but he didn't care to listen Well last night we were having a conversation and he told me that every since he found out about me talking to my ex (and just to let you know that I only called or texted him every two weeks for the control number where he would send me the money)... that something died that day and that he would never she'd another tear over me... he doesn't act the same anymore he use to tell me how beautiful I was every 5 minutes and tell me how much he loved me but he doesn't do that anymore I just feel like giving up on the relationship... is there anything that I could possibly do to get our relationship back to how it use to be??

Leave this one and certainly don't have sex with him. Hes acting like a child and since that is his true colors don't expect change to happen. He needs to grow up before he can actually commit to a relationship.