Most Helpful Guy
Huh that's really strange maybe something happened to him and he's sad , I'm not sure. Maybe he changed his mind but it would be fair to tell you and so on.
The best thing is to call him and ask whats wrong if he won't pickup cellphone it's time to move on.
Most Helpful Girl
In all honesty, people have a really fucked up way of cutting things off with out saying a word. At this point since you've reached out to him to make some sort of contact and he isn't replying back, I would cut my loses and move on. Unfortunately people are messed up and you may have not done anything wrong.