In terms of domestic issues, I don't see a justification for murder. If he was looking to make a new start with someone else, I think he'd have just walked. I don't think he'd worry about what her family thought, and I don't think he'd be concerned about his own family's reaction. Nor do I believe he had the spine to concern himself with what Kelsey thought. So why? What did he have to gain? He was on a birth certificate and had lived his life with "part time custody" to date, so why now? He saw what had happened to his peer, CW. There had to be something more to this tale.