I'll hit you with a reality that nobody wants to accept or even talk about. Loving your kids isn't magic. You're human; you either like a person or you don't (no matter how they're related to you), and it's completely out of your control. But, pretending to like him while being around him is so destructive. He will grow up not knowing when people don't like him, and they will use the hell out of him. It's pretty simple, really, if you can't be a good and loving influence in his life, then at least DON'T be a negative influence.