My Ex returns

My ex came back into my life saying he misses me and that he can't just ignore someone that was a big part of his life (we dated for 2 years and had a rough break up since he confused he cheated (didn't jave sex but did other things)).  I'm going to uni soon and we had thoughts of reviving the relationship but he doesnt believe in long distances since he wants to be able to touch me too.  I kinda did want us to work again.  Any thoughts on what i could do?  And also he still has fb contacts with the girl he cheated on me with and o told he in order for us to be intimate he has to delete her.  Ik this is complicated but such is life.  What would you do in this situation?