High school relationships help?

I have been going after a girl at my high school ever since I met her during my freshman year. I have tried all kinds of things from cheesy cards to roses on Valentine's day. I finally got the courage to ask her out last night. Her response is that she wasn't ready to date. But, a little less than two hours later I hear that she's dating someone now. So I check Facebook to make sure it wasn't a rumor and sure enough it was true. I feel devestated. Where do I go from here? Has this happened to any of you as well? All I feel is anger toward everything, but I know it's not the end of the world. Any advice at all would be appreciated. Thank you everyone.

In my opinion she probably already had the boyfriend and was trying to spare your feelings. Worst case scenario she does not think of you in the same way. I am now in college and trust me it gets easier. These heart breaks come and go and happen to everyone.