Yeah. I could care less about his age. I more wanted to understand what his responses/fixation here say about his personality as a whole.

I totally understand wanting to keep certain life details private, but most people who don't want others to know their true age will not ask everyone else in the office how old they are or brag about partying with a bunch of 21 year old women.

I'm definitely uncomfortable with his behavior but feel backed into a corner. I'm supposed to be mentoring him at work, so I can't just cut contact completely. My supervisor and boss are also problematic. I'm planning to leave this job soon but just need to stick it out for a few more months.