Contrary to popular belief, girlfriends are not essential to completing the game 100%. After you do this, she becomes your girlfriend whether you like it or not. You can date up to 6 girls in total all at the same time, if you want.
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.
This guide covers all you need to know about girlfiends.
How to get them, how to please them and most importantly what they offer you. During the mission Burning Desire you will need to rescue a girl from a burning building.
It will go down, if you dont date her, or a date goes badly.
When you meet your girl, she will tell you what she wants to do.
If it's a drinking/food/dancing date, icons will appear on the map to show you where the locations of these places are.
You might expect her to appear again, but she doesnt. If she asks to do a driveby, go into enemy gang territories and try to find some enemy gang members.
She will lean out the window and shoot at them when you get close. If she asks for a food date, take her to the cluckin bell south of her house.