I am in Michigan. My ex and I were never married. We have a 10 year old child together. After 4 years of parting ways, I am now engaged and need to move 35 miles away from my ex. We have somewhat "shared" custody for the past 4 years. We haven't gone through the court at all. I have had the child more often however, and have been the "primary" parent. Problem is, my ex does not want his son to move 35 miles away with me. What can I do to make this legal? The child wants to live with me, but he also wants to see his dad. Do I file for custody? I have no lawyer yet.