I like Ulq.. but... thinking of him with anyone just creeps me out. He's unable to perceive emotion, even if he was, somewhat, introduced to it towards his death. But he'd never be able to fully comprehend them, let alone love.
To me, he's an extreme form of A-sexual behaviour, meaning he has no sexuality at all in my books. He could be friends with someone, I guess, he does show loyality to the up-most, but never would be be in a relationship.
Ironically, I do like writing and reading oc pairings and yaoi for him though. Even if it does mean he's ooc-ing :S
For me, ulqui-hime is just.. wrong >_< I dunno who she should be with, but I like Rukia and Ichigo, you can see they have a close bond there. Maybe Ishida, I think, if I remember correctly, he likes her? I think he'd take better care of her than any one else >_>