One sided crush with great female friend who’s in a rs

Hello. 21/F. I made a good friendship with this girl last November but I knew I had a crush in even before we started talking. She does, however, have a boyfriend. I once asked her if she’s straight, she told me she’s sexually attracted to women but emotionally to men. She can only go platonic with women according to her. She’s sort of touchy with me, like playfully touching my boobs or waist whatever. We still talk to this day, and have gotten relatively closer; we shared very personal things about ourselves like her sharing her childhood traumas and etc. I don’t really want to be too vulnerable to her because she’s taken but I feel like she wants to get to know me in a deeper level. My friend said, dating is not the end all and be all, and that i should just try to get to know myself more through this friendship. What should I do?