he cheated.

Okay ladies I need some advice. My boyfriend got drunk and sent nudes to his ex. That he wasn't supposed to be talking to at all. He has a long history with her and I really haven't liked her for a long time. He came clean about everything ended up crying his eyes out and begging for another chance. He has never done anything else like this before. I really love him and this hurts me a lot. I agreed to work things out and he gave me all of the information to all of his accounts in case I ever felt the need to check anything. The past few days I have been trying to get over things but I can't stop thinking about it. I haven't even felt sexually attracted to him since I found out. It hasn't been very long since I've known but I just can't get it out of my head. What do I do? Any advice on how to feel better about everything..?:/