Once he does, he may need to date Denise at least once before leaving the city again in order to maintain his present status with her.
If one of the girlfriends is killed, they remain that way for the rest of the game, making it impossible to revive them without restarting.
These include a visit to a restaurant (including fast food chains, diners, formal restaurants and bars, alongside the bar in dance clubs), dancing at a dance club, and driving around.
Each girlfriend has their own different tastes to the three activities, as well as Carl's physical appearance.
If Carl takes a girlfriend to a restaurant they like, romantic music will play and it will show the two having a good time with each other.However, this does not apply if Carl remains outside the girlfriend's geographic area.