Fanon talk:The De Crypt Family/@comment-173.80.39.225-20121110123340/@comment-4920389-20121110131243

I play sims2, and there isnt any issue Im aware of that would stop this.

Technically I cheated with these two, created them married and then turned them after using these downloadable potions I found online... but I doubt they would create something like that into the game.

Maybe your sims dont have a high enough relationship? Aren't engaged? It would be under propose... marriage. Make sure your sims aren't married or engaged to anyone else, my brother did that once :P