I think it's a part of everyday life and the subject is going to be made mainstream in video games someday, I just don't think an excellent elder scrolls game is the right vessel, let some other horrible title gain the notoriety to pave the way
If a horrible title does so and becomes notorious for it then that precludes your earlier prediction. A good game needs to implement it appropriately before it'll be accepted.
Frankly as long as people think relationships = over-the-top hollywood chick-flick style six scenes and as long as you get parents who don't realise that their kids will
still become six-obsessed if they keep blaming it on films and games instead of actually bothering to talk to them, maturely, then it will never be in video games.
Still, Bioware has its integration covered. Maybe, come TES VI, the world will be ready to face up to the fact that it is part of what we are.
And who says there needs to be six? If you think that that's all there is to a relationship, you're more guilty than you think you are.
If anyone feels accused by the above statement it must be a dormant, deep-seated opinion of yourself, because I certainly am not the one to judge.