XF Final (b) - Unfaithful Jan 23, 2011 5:04:57 GMT 1 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by chosenturbo on Jan 23, 2011 5:04:57 GMT 1 It's time for the first of this year's star duets - and Matt's not doing it by halves. Singing her hit single Unfaithful - Matt welcomes none other than Rihanna to The X Factor stage!www.youtube.com/watch?v=jPqECSbNKn8&feature=fvworwww.youtube.com/watch?v=BQtrDtlgaXQ