Over the summer I started to hang out with a girl I've known since middle school, but I'd never really gotten to know her. We became really close and would tell each other everything. During the last month or so, though, that all changed. I would always ask her if she wanted to hang out and she would give me the excuse that she had homework. I can understand that because college does take up a lot of time, but when we had our winter break, I expected that we would go out more. Wrong. I asked her four or more times if she wanted to go out, but she would give excuses or say that she was busy with her boyfriend or babysitting or whatever. She calls herself my best friend, but best friends don't treat each other like that.
There's the saying that if something's important to you, you'll find the time — if not, you'll find an excuse. So I feel like I'm not an important part of her life anymore. The last time I contacted her, I told her that I felt like she didn't want to talk to me anymore. She said she did, but she was very busy, and then she said that when she asks me to hang out, I'm busy at the gym. Since then, we haven't contacted each other. If I don't start the conversation, she won't. I'm waiting to see if she contacts me, but nothing yet. It does hurt me because I thought we'd become very close. What should I do?