Help!

My friend and another friend went to a trampoline park with my crush. (We go every week) I was going to go but then I got sick that day. Anyways next week we were there again and my friend told me that my crush likes her. I asked if she liked him but she said no but I know her and I know that she was lying. I don’t know what to do. Do I tell my friend that I like him? Do I ask out my crush? Or do I do nothing?