Brendan Cole "dancing alone"
Former dance partner Camilla Dallerup, 33, broke off their engagement after seeing him getting close to the newsreader.
Now sad Brendan, 31, is trying to win her back. He said: "We started fighting. I enjoy partying, but it's not as exciting as our relationship. I'd rather have that than parties."
Danish-born Camilla said: "It was painful to watch him dancing with Natasha. We began to fight.
"Ours was a beautiful story but it ended in a mess."
Brendan reunites with Natasha for the Eurovision Dance Contest to be shown on BBC1 on September 1.