What to do about a girl I like?

Well I don't know if this girl and the guy's relationship looks like it's going to last for a long time. If so than you should just be friends. But if it looks like they are gonna be together for that long, than just wait for her. You can still talk to her and hang out but don't actually flirt with her or hit on her till they break up. I know exactly what you are going through. I like this guy, and I thought we were flirting and stuff today. But than I look on his facebook, and i saw his status was in a relationship!! And they just started going out yesterday. So I totally feel your pain. You can wait for this girl if you really like her. If you dont like her that much, than just move on and find somebody new. I hope I helped. Good luck with everything!