Very confused.... friendship woes?

I recently stopped talking to my best friend because she betrayed my trust in a major way, telling someone something she swore not to (and it wasn't something that was putting me in danger), and tonight I was feeling really depressed and just wanted to extend an olive branch, and I imed her. She told me she had a secret of her own, and it's crazy. And she really wanted me to ask what it was, so I did, and she told me she's been in love with me all along (a few years), but only realized it when we were fighting and she didn't get to talk to me all the time (she's bi, I'm straight) and I hate myself, but it made me look at our relationship differently, and it's not because she's a girl, but it's because she's in love with me. I'd feel the same way if it was a male friend who told me that (in fact it's happened before, and I cut ties with them), so I feel like a jerk stopping being friends with her, even though I was still on the fence about our friendship before she told me that.