I want to have sex with my best friend

I like my bestfriend. She has a boyfriend but hates him and I think she's gonna dump him tomorrow. She has a boy that loves her in another state. She has hinted to having a crush on me and was totally okay with when I kissed her on friday. I have had to fight the urge to tell her I really want to have sex with her. She's so hot and she really cares about me. What should I do?