Buffy&Caroline
Up until Sam, but experiences were usually of the 'please don't notice me oh, oops, now I'm going to have to explain how that guy dusted', variety.
I mean, except for Riley and the Initiative thing, but come to think of it, that really didn't work out so well either.
Wow, three years - that's, kind of impressive. Although... I guess I've been here coming up on a year now.