I am So sorry you are hurting right now. And ya know what, you might keep hurting for a while, but that doesn't mean you need to be with him. You should be happy that it's finally over with the goof. As hard as it may seem. Once a cheater, always a cheater! I hope that doesn't sound harsh, those are not my intentions. I am truely sorry. Breakups are not easy but you deserve better than that. I have been through that also. after almost four years. It totally sucks!! You'll be okay though!
Dan and Corrine had awesome advice. I know it's sooo hard when you on't have gf's around. You know what...now is your time. Don't sit around and wait for Dan. Make yourself busy and unavailable. You could volunteer. This way you meet people and have something to do. This is what I just started doing cause I was having trouble getting out. It totally sucks you have to live with him for a few more months. Just be glad that this is happening now so you will have the rest of your life to live without him. Feel free to pm me if you need to chat, or vent about this.
Good luck and hang in there. I know you can do it. Be strong girl!
