Thanks for all the replies. It makes me feel a lot better to just have someone to talk to about this.
We had a pretty good dinner. I'm not ready to tell her yet. I know I could go on with my life without her, but it would really knock me down for a while, and I'm already struggling with a lot of things and I don't want the added stress. My best guess is even if we stay friends, it will be strained and weird for a while, and she may not talk to me for a while because that's just the way she is (she's awful about conflict, so whenever we have a fight we don't talk for a few months, and then one of us calls the other and then we're friends again).
It's times like this I wish I had more close friends, but I'm incredibly anti-social and hate meeting new people.
Katie (Kat)