Sounds like he may be one of those men who just flat out abandoned you. It's sickening that people do that, but it's also happened to me a couple of times. I'd just leave him alone for a while.
Though it is entirely possible that his family intervened and that they are trying to separate him from you. Either way, it's better to keep your distance; because if you keep trying to contact him or if you try to find him in person, you can look like a creepy stalker; and that's never good.