Cockblocking his friend?

I’m talking to my man. We’re on ft on his laptop when a friend calls him on the phone. He has the female friend on speaker, and he’s texting me and watching me through the laptop. She’s aware that I can hear the conversation, he told her. We said hello to each other 😂 the female friend likes my mans friend, J. My man is saying that he would make it his life mission to make sure they don’t fuck or get together. He said there’s over 1 million guys in this world, why would she want to fuck his friend? He said he’d find her another guy to fuck and be with, but not his friend. Idk what to think about this. Apparently J has an on and off relationship.