Ali and Brian did but recently split up.
Flavia is now with Jimi, having split with Matt a few months ago,
Brendan and Natasha denied it, but I think they were lying.
Kristina and Joe Calzaghe - never quite understood how such a beautiful dancer could be with a man with no rhythm!
Someone said to me they thought Matt and Alesha had a little fling, but I don't know for sure.
Can't think of any others at the moment, but sure they will come to me.
When you spend so long with someone everyday you can feel like you are in a relationship. You'd be surprised how many married professional dancers end up splitting up once they retire from the dancefloor.