How do I get my boyfriend of five years back?

me and my boyfriend decided to live separately about 3 months ago. We were fighting a lot in front of our children. We have both been under huge amounts of stress with our finical situations and I bickered with him a lot b/c of his parents not liking me and he would not stand up to them. We were seeing each other on the weekends till now. About 7 days ago he called told me it was over b/c we are still fighting about things and we are going to be friends. I do need to say that I am and my daughter are in counseling to help us fix our individual issues. He has only taking the steps to admit his faults in this relationship. He is also using pain pills to get high and I have asked him to stop and he wants to just to scared to. He called me a few days ago going on and on about so did you find a new boyfriend? Who is there with you and where you and what are you doing? Then he ask if we can still have and I told him that he can`t have his cake and eat it too. It was a good conversation made me laugh and then he slipped up and called me baby but corrected himself. We both want to be happy and a good friendship again. How do I get him back in my life as we were in the beginning?