A doorman helps keep randos who intend to steal packages, jiggle door handles to check if any apartments are unlocked, or urinate and puke in the elevator from tailgating their way into the building.
Unreal. When I lived in apartments I always made sure no one followed me in unless I recognized them and knew they were my neighbor or a neighbors guest I saw frequently.
When your neighbor broke up with their boyfriend, did they notify everyone in the building to no longer let him follow them in like you seem to be ok with doing? Or did you just assume it was fine and let him in since you saw him come in with them before?
I think I'm probably more socially awkward than you but maybe just in a different way. :)