Will Smith vowed to get Jada Pinkett Smith last week.

The 45-year-old actor, who sparked speculation his 16-year marriage is over after photographs emerged of him cosying up to his 'Focus' co-star Margot Robbie, 23, in a photo booth at party in New Orleans recently, revealed his desire to expand their family on their daughter Willow's 13th birthday last Thursday (31.10.13).

The 'After Earth' star wrote on his Facebook page: ''Happy Birthday, Willow! Our baby is 13 today. No more little ones in the house.... I think I'm gonna get Jada pregnant tonight.''

The couple's friends recently brushed off rumours they are undergoing a trial separation and insisted they are doing ''great''.

One insider previously dismissed the photos of Will and Margot, saying: ''That was a photo booth on set that the producers got for everyone. It was the last day of filming and everyone was taking pictures. They were just goofing around. Will is just like that. There's nothing more to it.

''Everything with them (Will and Jada) is great.''

Earlier this year, 'Madagascar 3: Europe's Most Wanted' star Jada, 42, insisted it would take a lot for her to ''abandon'' her husband.

She said: ''What is the thing that Will could do to make me not love him? That would make me abandon him? I can't think of one. I'm sorry. Except if he did something bad to the kids -- now we've got a problem.''