Hey! I have made a situation my life where I don’t know what to do next...

So my college friend invited me to move in with her and her brother. we are living together for 2months.

And then I had sex with her brother and decided to stay as friends with benefits. Buuuut I started to feel more about him than just a friend. And I think he is falling for me too.

So now I live together with my best friend and my crush. Should I tell my best friend about this? Or tell my crush that I like him a lot?