Guys, Why would a man want to compare himself to other guys in my life?

See title. More details? We all work together, but he constantly brings up other guys that I tend to be close with at work. It's like he's trying to find out who my favorite guy at work is? I brought up a guy one other time 6 months ago, and he still randomly asks about it.

Guys, Why would a man want to compare himself to other guys in my life?
Post Opinion