Buffy & Riley, dislike them both, so well suited
Wes & Illyria, had welsey not died I wouldve liked to see them get together in a freaky kind of way
Xander & Anya, should have stayed together. The wedding disaster in s6 sucked. And without Anya Xander had disappontingly little point in s7, other than fixing the odd window. Anya still could have died, but in much more style with Xander by her side.
Willow and Tara. As much as I like Oz I don't think he was that well suited to Willow.
Angel & Spike hahahaha the sexual tension was there :evillol: And there's...
Spike: "Angel and me have never been intimate, except that once..."
Faith and me :hihi: