My 11yo step-son has recently been complaining to his biological mother about how much he doesn't like coming to our home half the time. He'll give her reasons why that are just not true. I had a conversation with him asking him why he would say these things (he says we call him names, withhold comfort items, treat him differently, etc.) and he told me "Well I guess I was over-exaggerating". I had a heart to heart with him about how families support each other and that if he has a problem with our home he should come to me so we can resolve it. But I don't think he'll change. I have 3 younger children with his father. We spend so much time doing family activies together, I read parenting books in my free time, and I'm a teacher so I feel like we have a pretty healthy, happy home. But for some reason he just dislikes our home and is taking it as far as lying in order to stay at his mother's. What can I do? I just don't understand why this is happening to us.