Let it out. Be angry but don't dwell on it. The past is the past.
Most Helpful Girl
Umm, when I was going to school I didn't get asked either. Life goes on though. Not being asked to homecoming doesn't make you less of a person or catch. Also, you could have asked someone out. A lot of times, women believe that the guy should do the scouting. This shouldn't be the case.
If you were quiet and shy (read that in the comments), you probably didn't seem approachable. Guys that age are uncertain, and look for girls who appear open to opportunities. I can understand it bothering you; but I have to ask - how have things gone for you since then? What's your life like today?