it feels like men as such who have to who have to use "my girlfriend" is trying to feel validated. (specially when it is used way out of context)
If i knew the guy, sure no problem.
but lets say me and this stranger are talking about the universe and all the scientific discoveries yadi yada and he suddenly he says "well, my girlfriend's dad went to college know a thing or 2 about yadi yada"
All they got to say is , ":this person i know, her dad went to college bla bla"
You sound like a damn weak beta simp.. imo who is trying to feel validated