Most Helpful Guy
He is struggling with his emotions and morals, he is obviously very confused and probably not very good at making decisions. He is also probably worried that he will make the wrong decision and he may even be thinking about other peoples feelings and opinions in all this.
He may however be thinking that he could have the physical/ exciting relationship with you if you are willing but keep his previous relationship in tact because of complications involved.
Either way you need to make the call on this
Most Helpful Girl
he feels guilty or he sees what he did and wants you back