Most Helpful Guy
he's prob afraid that you'll get the wring idea if he comes
Most Helpful Girl
I know it hurts. But it sounds like it's all about him... he didn't like you, he doesn't want to feel awkward, how about him taking into considerations SOMEONE ELSES FEELINGS? He sounds a little too self-involved.
He doesn't want to come... fine. But be honest with his friends if they ask you "Where's X?"
Tell them "He didn't come because he didn't want to feel uncomfortable. He knew you'd be here, though." Might give his friends a little something to think about.
Chin up... this one was not right for you.