Help!

Claudia

So me and this girl have always had sexual tension and when we both got drunk together it really showed and she ended up fingering me and it was quite good but when I told my bestfriend she was upset with me bc I had met the other girl through her and she thinks I shouldn’t have crossed that line with her bc of the friendships etc but idk if I have feelings for this girl and if I do I don’t want my bestfriend to be stuck in the middle and I also do not want to choose between them bc I love them both so much I need advice on how to handle the situation can anyone help?