Jack Osbourne and Gemma Atkinson enjoy a night out on the town

As far as celeb couples go, it's not the first pairing that would spring to mind. But Jack Osbourne, 22, and former Hollyoaks babe Gemma Atkinson, 23, were acting mighty shifty as they left Bungalow 8 early today.

The pair were spotted getting close and flirty inside the Covent Garden bar last night, and went to painstaking lengths to avoid being photographed together.

Romance? Jack and Gemma leaving Bungalow 8

They met at a private party around the corner before heading to Bungalow 8 with Jack's sister Kelly, Nat Weller and Entourage actor Adrian Grenier.

Our spy said: 'Jack and Gemma arrived separately, but were sitting at the same table together. They chatted for a long time, and looked rather cosy at their table.

Unlikely duo: Gemma holds on to Jack as the pair make an exit

'She was laughing at his jokes and flirting - he seemed to be loving it.'

But their exit was even stranger than their arrival.

At about 3.45am, Jack sent Kelly, 23, out as a diversion for the snappers, while he tried to sneak out with Gemma.

Decoy: Jack's sister Kelly leaves the bar with friends while he attempted to sneak out

She clutched his midriff as they jumped into a cab together, but they weren't quick enough to dodge the photographers.

Model Gemma is a former WAG after dating Man Utd star Cristiano Ronaldo and she has an on/off relationship with Wigan striker Marcus Bent.

As for single Jack, it was his second night out in a row with a beautiful lady on his arm after he stepped out on Tuesday with model Natasha Prince.