I think I got married in Skyrim once. That one adventurer in Riften, with Grimsever. The creepy thing is, when she moves in with you, her friend does to. Aaron or something.
Mind you, I never got that far in my particular playthrough, as the marriage ceremony glitched out and a dead Lydia spawned with the other guests, which called the whole thing off.
The only character I think mine would like to spend time with would be Serrana, because she's quite useful, interesting to talk to, and can't be killed thanks to immortal tags. Not that I bring her along often, as it stops me from deploying my crazy AOE effects (particularly the Midas Magic stuff. My Destruction can level anything if need be, so I've started playing with other magic stuff for fun. The physics engine has made me laugh far more times than is normal). Though I still craft custom armor and enchantments for my favorites, just to be nice. I love making custom pieces out of human souls with the Black Star, choosing enchantments that matched their personality. Especially the Dark Brotherhood targets. Or sometimes I just target people I don't like, kill them, soul trap them, forge them into items and drop them into places they'll never escape from. Mr. Silver Blood is a ring now, Grella the Kind was made into a pressent for that one kid who ran away from her orphanage, and I've got my eye on Nasir "Do you get up to the cloud district very often?" the Whiterun Asshole once I manage to set up his murder just so.
And I've drifted off topic. Anyway, I hate romance quests in just about every game, so it's not important to me.