I'm trying to mentally prepare myself to see my baby's father. We were engaged and had so many things in our lives…

I'm trying to mentally prepare myself to see my baby's father. We were engaged and had so many things in our lives planned out. He formed a gambling addiction and I made him chose our family or his addiction. He made his choice but since I do still love him when he chose to go to treatment I decided to see where things would go. On Thursday I get to see him. This won't be a fun trip. I just really am not sure how to prep myself to be there.