Like the other relationships that Niko has with his friends in GTA IV, favor can be gained with girlfriends by taking them to different venues around the city.
Unlike the male friends, however, dating is more than just worrying about the venue.
Preferences Kate Mc Reary is introduced in the mission Harboring a Grudge.
With a helicopter, snap off the blades at a height where Niko's girlfriend can get hurt but won't die.
Early Grand Theft Auto games made reference to the protagonists having love interests, such as Claude and Maria Latore from Grand Theft Auto III and Tommy Vercetti and Mercedes Cortez in Grand Theft Auto: Vice City and Victor Vance and Louise Cassidy-Williams in Grand Theft Auto: Vice City Stories, but the ability to date girlfriends first appeared in Grand Theft Auto: San Andreas.
If an Internet girlfriend's fondness is raised to a high enough level, her "special ability" is unlocked. Preferences There are ten "girlfriends" that Luis Lopez can have in The Ballad of Gay Tony.
If Niko Bellic has a bad date or does not ask to come inside, the girl dumps Niko. Luis is able to dance with them in the clubs and if he does well they'll bring Luis to the restrooms for an encounter, after which they may give Luis their number.
The other three, Carmen Ortiz, Kiki Jenkins, and Alexandra Chilton, are met via online dating services.