<human>: Can you condense the text into a few key points?

So I'll say that I'm still in high school. I'm a senior and I've never had anything close to a relationship. I have, however, suffered silently under three huge crushes.

The first crush I never talked to and kind of stood to the side, so she eventually gets a boyfriend and I get over her.

The second crush is actually the person that "bought me out of my shell," but she is now focusing on school instead of relationships as she feels she is bad in relationships and I have recently learned, today, that she doesn't see me romantically and never has or will. 

The third girl is actually the ex of one of my best friends. My best friend is okay with the ex and I dating, but the problem is that she basically led me on for a month, flirting with me, but decided to date someone else. She recently broke up and start flirting with me heavily. The reason I didn't make a move before with her was because I was still crushing really hardly on Crush 2. But now that I've learned that she isn't interested at all...I feel like this is the only chance I'll get to get any sort of relationship experience or find someone who actually likes me back.
<bot>: Friend's ex wants to date me now, but she only appears to want a relationship rather than me, but I feel like I'll never get another chance at any sort of relationship.