Does he occasionally regret it? No, But the feeling of rejection and self loathing remains. Can he go back? No, that isn't an option anymore. Is the pain of what he's lost still lingering? Yes, there isn't a day that goes by that he doesn't wish for it back in one way or another. Is he happy? That's the difficult question. He has friends and cares for them but it's not quite the same. Sure he'll smile, laugh, and have fun but there's still that hole that he can't always ignore. A better wording of the question would be, When the time comes will he let himself experience the kind of happiness he deserves? Will he be able to experience the world's true colors? Or will fear force him to be stagnant. "being ignored by the people you love is hard but what hurts most is how they make it look so easy"