The Saturdays singer confessed that her green-eyed streak rises to the surface when she spots women eyeing up the 35-year-old model - who has been posing in his underwear for more than a decade - and admitted that she knew it would be hard to ignore the attention he receives when they got together.
She said: ''Every now and then I get jealous. I guess I'm just a normal girl so sometimes I do. But I knew what I was letting myself in for.''
The stunning blonde first met the M&S poster boy in April 2011 but they parted ways several months later.
However, they rekindled their romance last year and have been inseparable ever since.
And any love that David, 35, has left over he gives to someone Mollie, 28, knows she can trust - her pet poodle Alfie.
She told the Daily Mirror newspaper: ''They have an absolute romance and I'm the third wheel. When I realised they got on well, I knew David was a good one.''
The Irish folk brothers have plenty of stories to tell.
In terms of approach, 'Chain Tripping' takes some beating. To call Yacht's latest release conceptual would be underplaying its inspiration wildly.
On 'Tallulah', Grant Nicholas and Taka Hirose seem to have that burning connection again.
Burn My Eyes was released on this day (August 9th) in 1994.
With an eclectic mix of established acts, up and coming talent and resurgent household names, Neverworld once again offered up some superb musical...
Listen to their new song 'Alchemy'.
They release their album 'I Won't Be Found' next month.