Same, my GF and I have recreated ourselves and just recently created some bastard retard-alien looking family and have been messing around with the motherlode cheats. In 'our' life tho, we take turns playing (rightfully, without cheats), and we love every minute of it. Keep in mind my GF is a gamer, attends E3 with me, and has been an avid sims player since the original came out.
A lot of her friends love the game too. If you ever want a girl and cant hide the fact you're a nerd, bring her over and have her play sims 2 for a bit. Chances are she wont judge you because she'll be enjoying it.