let him go

you don't want to chase him all your life, do you?

it's a game of hide and seek, if you keep seeking, he'll keep hiding. or he may have found another game somewhere else.

either way, he's not yours to keep. you want someone who's attracted to you, so he would come to you all by himself. that way you can relax and enjoy your life, rather than spend days and nights wandering whether he likes you, why he hasn't replied to your emails, who he is with...

just take his nonreply as a reply of non-interest, and consider him a non-friend, or ex-friend, or whatever in the past, and move on with your life.

next time, if someone disappears again, don't email. don't try to pull him back, let him come back all by himself, if he wants to. otherwise you never know whether he really wants you or not.