Does he want me because he can't have me? Any thoughts?

Hey girl. Don't worry. I was in the same situation once. This lasted for 3 years of my life. We became f*** buddies after we broke up for some reason. It was good. Even continued while I was dating my husband. It's wrong of me but I needed someone to do me right you know. Anyway... I fell pregnant with hubby's baby but now he thinks it's his. It's not. I got married and never heard from him again. I try my best to still remain in contact on a friendly basis but I think he's upset with me because I got married. Maybe it's for the best though hey