Not coming to the guys defense and I don't mean to offend you Rick or your girlfriend but she didn't exactly give off the "don't bother me" impression in that conversation which may explain why he kept going, I may be wrong though.
After saying her friend may have herpes and 5'3 190lbs, dude was still interested??? He might as well go down to cleveland ave if he's that desperate, god forbid someone take him to a strip club.
