Aster,

I agree with everything what anita has said.

Your original assertion of not wanting to get into a relationship while he was married was the right one.  Now you have to take charge of your life by getting help from a therapist and taking back your house.

He needs to live on his own in order to grow into emotional self-sufficiency.  Jumping from one relationship into another is fraught with issues and challenges as you have experienced.  You need the physical distance from him in order to get straight in your own mind and recover from this betrayal.

Mark