Kelly BrookKelly Brook reportedly got back together with ex-fiance Billy Zane because she got jealous that he was already seeing another woman.

Kelly and Billy ended their four year relationship last month after the Strictly Come Dancing star reassessed her life following her dad’s death late last year - but were spotted together again last week.

A source told the News of the World that seeing Billy with another woman, Kelly reconsider again: “She was madly jealous and realised she wanted him back.”

But a source close to Kelly’s family insists that the couple haven’t picked up exactly where they left off and Kelly is insisting on “taking things slowly”: “Billy has told Kelly they should go ahead with their wedding plans.

“But Kelly has said ‘no’ - for the moment anyway. She says Billy had made up his mind that he didn’t want to get married, and so it doesn’t feel right to just suddenly get married after all.

“Kelly won’t wear her engagement ring and is not organising a wedding.”