I agree, I think there is a lot of potential with relationships that Bethesda has not seen. I wanted to start a family also [img]http://www.gamesas.com/images/smilie/tongue.gif[/img] I believe Fable games have the idea that you must build up the reltionship with the person by giving them gifts etc. before marrying them.
Maybe a DLC idea for Bethesda?
buiding the relationship would be nice. you sort iof build one with Aela, as you do a bit questing together, but even that is not enough. you need to win their favour properly. take a look aty The Sims 3. you need to socialize and be nice to the person, and soon you become friends, the best friends, BFFs, and soon one will fall in love, and the other will soon follow suit. if the sims are in the BFF stage, i've noticed that once the relationship bar maxes out, get them to hang out, and have a long session of pvssyr, friendly hugs, jokes etc, until one of then gets a wish to kiss/fall in love with/hug amaorously etc. then continue, drop in the occaisional "Compliment Appearance, and soon both sims will get wishes, and go for gold.
obviously, in Skyrim that would be rather tedious, BUT something similar. a relationship ranking, not just 1-4, but say, -100 to 100 (for the sake of this example, i'll call them "favor points"). doing good things will add a bunch of points (dependant on what it is), doing evil things will cause them to plummet. -20 to 20 could be the "neutral" zone, below -20 could lead to dislike, hatred and eventually becoming arch-enemies. at 20 or higher, you become friends, then good friends, best friends, BFFs . and at around 90 favor points, the NPC will show signs of affection, at 100 it will be obvious (but thet attempt to hide their feelings).
perhaps it ccouldould range from -200 to 200. as long as there is enough room to become someone's enemy, yet slowly bridge the gap with goodwill, and to ensure that you build the relationships at a good pace, but not too quickly. perhaps an NPC';s personality would affect point gain/loss eg forgiving, kind characters will gain favor a bit quicker, while bitter characters could gain favour at a reduced rate, and lose it a bit quicker.
if quest prerequisites are needed, the relationship ranking is locked at 89 (1 point below afffection) until you complete it