I'm a bisexual woman in love with her straight girl friend, HELP!

I am a bisexual woman who is actually falling for her STRAIGHT girl friend "Angel" .. I couldn't hold it in any longer so I told "Angel" that I like her beyond friendship & she was pretty cool about it .. She did however clarify that she's straight .. Now, although she knows of my sexuality & crush on her, she still doesn't mind having a dinner & wine date .. What does this mean? Does it mean that I may have a chance or what?? I don't know!! I want to know if she mayyyybe thinks outside of her sexual preference & is considering the other possibilities .. I'm afraid to ask her to be honest .. I'm lost & I need help ASAP cause our "date" is next Sunday O.O

Im going through the same thing at the moment!!! I admitted to her that I liked her and she was fine with it and didnt comment much. I think it sounds like your mate really appreciates your trust in her and doesnt want to lose you, so she accepts the fact you like her and that your bi but shes straight :/