[Help] This is about a girl.

So I just graduated high school and I'm trying to get my life together. I've been trying to lose weight by running/push-ups/sit-ups/etc. in the morning when I can, and I am loving the feeling and energy it gives me. I smoke pot, but not excessively. I only do it when I know it won't interfere with my productivity at all and I've gotten pretty good curbing the munchies. It helps me with my confidence and anxiety though.

I found out a couple of months ago that a girl I had a crush on in grade school is going to the same college as me. We've been talking on facebook on and off since May, but I always start the conversations. She's responsive at first, lots of smilies and exclamation points, but then the conversation kinda dies.

I know the chances of anything happening between us are really small and I honestly can't say whether or not i still like her since we haven't seen each other in four years, but I can't stop thinking about her (I think this is because I haven't had feelings this strong for any girl I've known throughout high school). On one hand, I know if I wanted to I could just go about my business and probably not see her ever again, but I also don't want that "what-if" hanging over me. I'm really not sure if I want to give a fuck. Any advice is greatly appreciated.