They are merely a fun alternative to the game that offer rewards for dating them. You dont have to date any, but some have good rewards. Each girl becomes available as you progress through the game but not all of them are aquired through missions.
Some of them can be found around San Andreas and it is up to you to meet each girl's tastes.
Lots of sex appeal Last but not least Katie: Muscular men with a lot of sex appeal The times they are home are: Denise: to Millie: to Michelle: to Barbara: to Helena: to or to Katie: to Cars with highest sex appeal to drive on dates: Super GT, Windsor, ZR-350, Blade, Remington, Slamvan, BF Injection, Caddy, Huntley, Hermes, Euros, Merit, Sentinel, Stretch, Tahoma, Washington, Buffalo, Elegy, Flash, Jester, Stratum, Sultan, Uranus, Banshee, Bullet, Cheetah, Comet, Hotknife, and Infernus.
In Grand Theft Auto: San Andreas, there are six possible girlfriends for Carl, with two of them, Denise Robinson and Millie Perkins, becoming girlfriends through the storyline.
Dating any of the six girlfriends is not required for 100% Completion with the exception of Millie Perkins who can be killed on the first date.
Denise is first encountered during the mission Burning Desire for Frank Tenpenny, whilst Millie first appears during the mission Key To Her Heart in Las Venturas.
Make sure CJ has high sex appeal and make sure your car isnt a wreck either.
There are several types of dates, depending on what girl you are dating.
If it's a drinking/food/dancing date, icons will appear on the map to show you where the locations of these places are.
Driving dates depend on which girl you are dating, but can range from cruising about, driving fast as possible or driveby's.
Sex appeal is very important when getting a girlfriend and turning up to a date.