He's either cheating (found someone else) or no longer
interested in the relationship.
It's not worth chasing him or pursiing the relationship with him
if this is the case. Save your pride and find something else
(hobby, work etc) to focus your attention into.
If he misses you and wants to return, he'll contact you.
Otherwise, it's better you leave him be and concentrate your
efforts elsewhere.
Take care.
yalor, we gals should show our strength instead of keep relying on
all these stupid guys action and abuses, let go for a few
months, see if he call and beg or not, if not, nevermind, singapore
still got lots of guys, not that he is the last one around. Go out
with other guy and see how he react, must let them have a taste of
their own salt.