I expect
you weren't showing enough interest.
Thats the main reason unless it was a boyfriend and the two of you broke up.
The other reason is there's another girl that he's got close to and he has just shut you out completely to focus on her.
Whichever it is, it proves NC is NOT bull. It has your hamster spinning doesn't it?
P.S. as a girl on a man's site, you should expect bitterness and resentment, especially on a thread for dumped guys. Wouldn't take it personal.
Peace. G.
Main question is -
Why haven't you called him?