DoABarrelR0ll: I just wanted to thank everybody for taking the time to answer. She is currently visiting family in Cali, but I guess I'm going to have to man up when she gets back and just say how I feel. What is the worst that can happen (Don't answer that)?
If she told you about her previous interest in the recent past, I'd recommend going for it before things changed. Women don't generally say things like that unless there's some reason for it.
As to being too stupid to notice, unless she came up to you and said that she wanted a date, it's not fair to suggest that you were being stupid. Most women know very little about how to communicate interest to men, and all of them know far less than they think. The ones that do know how are not likely to be available for very long, or are perpetually available to anybody with a dick.
orcishgamer: I know you can only envision being with her, but you're 21 and I guarantee you'll meet 100s of pleasant chicks every single year in your 20s. So put her in your friend zone and quit investing so much time in her mental well being, that's her job, not yours. Yours is to go have fun yourself, not be her crutch. Do this and you'll not only be more attractive to everyone but her as well (even if she ends up liking you I'd still give her a pass until she's matured a bit).
This X1000. In ones twenties, particularly while still college age it's really easy to find somebody else, but as you get older, it gets to be harder and harder to find somebody.
Personally, I find that the vast majority of women that are interested in me at this point are married or are otherwise involved. Or, know absolutely nothing about flirting.