They had a son named Max Harrison.
Mandy, 31, has split up with fiance Ian Mosby, the father of her one-year-old son Max.
And while she has gone home to mum, Ian, a male model, has been dating former GMTV weather girl Sally Meen.
Mandy and Ian started to fall out shortly after Max was born," a family friend said last night
"They started to argue all the time and it soon became clear that the relationship was doomed.
"Mandy is very close to her mother, and I think that also caused problems for Ian."
started dating Mandy in January 2000, after they met in London`s Titanic Bar.
They were engaged six months later, and spent their time flitting between homes in Brighton and London. Despite a rocky relationship, the couple were overjoyed when 8lb 4oz Max was born last May. Speaking of how she fell for Mosby, Mandy said: "We talked for hours and something just clicked."
But she acknowledged her troubled past made relationships difficult, adding: "I knew it was going to be hard work, because I`m hard work.
"I`m not an easy person to have a relationship with because my life has always been about, `Me, Me Me`. I`ve lived very selfishly."
Mandy, who admits she was on anti-depressants until she got pregnant, checked into the Priory Clinic while she was carrying her child.
She said: "I was worried about having to look after a baby. I was having problems with Ian and wanted to be on my own, to talk to people who could give me guidance.