Str8 girl advice is needed! It would be like one of my fantasies coming true of my lustful feelings!?

I need some info about str8 girls. In anyone's opinion what are some tips that str8 girls are interested in you? I have known this girl for like 17yrs. We recently went out to the gay club, and kissed. Now, she's so flirtatious with me! I wouldn't mind hooking-up with her, but I don't want to date her. She sends mixed signals to me and we talks to me about how freaky in bed she is, but that people don't realize that b/c she's totally a lady on the streets. We almost went all the way through with things about 2wks ago, but I respected her and I want her to know for sure. Yes, I really like her a lot and have always been ually attracted to her. She knows me very well! I wouldn't mind the friends w/benefits thing. How do I know if she is interested in this too? I don't want to piss her off by directly asking. If someone tells u how attracted they are to u, but tries to play off the best friends role when we get too close. It just leaves me wondering wtf! I am a girl and enjoy intimate moments with females. I don't have to be in a relationship with them. It's just like casual . She says she understands and totally agrees with me that it's okay. We r 33yrs.old, but we send each other emails of you tube video's that are about love or seductive video's. Is this normal? She sends me hot ual female video's. what's up with that? She stays on the phone with me for hours at a time. She admits to teasing me at times. She listens and remembers more things than my gf's have in the past. She tries to show-off in front of them about how much she knows about me. What does this woman want? She also said that I am the only girl she would ever want to do things with, b/c s have hit on her in the past, but I am the only one she wants to experiment with. I like experiments!!LOL