Why are you suddenly deciding that being with his father is a bad choice? We literally know nothing about whether he’s a good dad- it is possible to be a good parent and provider and a bad husband. No matter what happens in his parents relationship, both will still be his parents and it’s the parents’ job to sort it out. What we do know here is that his mom is absolutely a red flag- you do NOT manipulate your children into taking sides in a divorce. The parents should be there to support their children and not the other way around.