Why didn't he call after ? I feel rejected!?

If you've been seeing the guy for "a while", however long that may be, he would have to give you an explanation if your relationship was over (unless he was a complete and total ***hole, which hopefully he's not). I think you should ask him casually why he didn't call. Text him saying something like, "Hey, I expected to talk to you last night. What's up?" Or something along those lines. From there you can find out why he didn't get a hold of you. Maybe he was just busy.