My friend and room mate gave me a back rub and I feel weird, what do I do?

My friend gave me a back rub... I think she is into me and I do not know what to do. I am not gay but I admit I liked the back rub a lot... It was very sensual.. she used all kind of oils.... If I was a guy I would be totally into her. I told my BF and he just made a stupid pig headed guy comment about how we should all get together. I am really really getting tired of him making light of my relationship with my friend. I do not want to have any kind of physical relationship with my friend as I am not gay but I think I love her and I do not know what do to do. If I could be a guy or she could turn into a guy this would be awesome but I just am so beside myself. What do I do?