I don't see why it is ahead of our time to incorporate sexual relationships into the storyline of a story-driven game. If it is appropriate. I'm not talking about the actual act of sex being part of the gameplay, that would be difficult to do without it becoming ridiculous. After all, the act of sex can appear quite ridiculous when examined outside the heat of the moment.

In the real world, sex is a part of almost everyone's intimate relationships and it does play a part in them, I would argue a big part. It doesn't have to be explicit in a story. Say you have an RPG, it could be set in any era/world, if your character has an intimate relationship with someone you would assume they would be sexual partners as well. Then if your partner (or you) indulge in a little infidelity it would be a great way to explain a twist of allegiances in the story. It can create complicated urges and emotions which may influence the choices you have your character make.

Is this sort of example so far out of the realm of today's story-intesive games?