of course Spock can't love Uhura, he's a vulcan, he can't show emotions ... BUT, of course, if the couple is Kirk/Spock then we do want a romance!
Not me, yuck!
(and I say that as a supporter of gay marriage, by the way.
I don't want them to have a romance. I just want them to have a great deal of sex. And be friends, hell yeah.