Back in GTA: San Andreas there was an item you could give your gf as a gift, a big purple dildo!

Maybe she didn't like it after all because it's been thrown away! You can sometimes find it in random trash piles throughout the game, an obvious place is outside the building in Tudor which you storm in the mission 'Trespass'. To the left of the building, near the side door is a trash pile with the purple beast sticking out!