So my friend used to date this girl at the gym. We all go to the same gym and see eachother almost everyday. They broke up recently and I thought nothing of it until today her best friend comes up to me and tells me that the girl had a crush on me the whole time but doesn’t know how to approach me. She showed no signs of interest at all and I had no idea. She also doesn’t know that I know she dated my friend for a good 6 months. Her best friend was telling me she wants a “nice guy now” which just put me off as if she went through a hoe phase and now wants me to fix her

Now I don’t know what to do. I feel like a second option and also have loyalties to my friend. What would you do in this situation?