Days before photos of Will Smith and costar Margot Robbie getting close in a photo booth surfaced and sparked rumors that Smith was cheating on wife Jada Pinkett Smith, the actor wrote on Facebook, "I think I'm gonna get Jada pregnant tonight." Credit: Steve Granitz/

Thinking of leaving his family? More like expanding it! Days before rumors hit that Will Smith was allegedly cheating on wife Jada Pinkett Smith and they're headed for divorce, the 45-year-old actor wrote on Facebook that he might like to have another child with his wife.

"Happy Birthday, Willow!" he wrote in a message to his daughter on Thursday, Oct. 31. "Our baby is 13 today. No more little ones in the house . . . I think I'm gonna get Jada pregnant tonight."

Smith's PDA shout-out to his wife of 16 years was made just days after photos were taken of the actor getting super-close with Focus costar Margot Robbie in a photo booth on Oct. 25. The scandalous images -- which include a partially nude shot -- surfaced this week and rumors of infidelity followed. But a source told Us Weekly that Smith and the Australian actress, 23, are "not hooking up."

"That was a photo booth on set that the producers got for everyone," a second insider told Us. "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." The romantic comedy film, which tells the story of a con man (Smith) who becomes romantically involved with a novice (Robbie), was originally set to star Ben Affleck and Kristen Stewart.)

Smith's marriage has been making headlines for months now following an eyebrow-raising interview Pinkett Smith, 42, gave to HuffPost Live in April while attempting to clear up a longstanding rumor that the couple have an open relationship. "I've always told Will: You can do whatever you want as long as you can look at yourself in the mirror and be okay," she said. "Because at the end of the day, Will is his own man. I'm here as his partner, but he is his own man. He has to decide who he wants to be and that's not for me to do for him . . . Or vice versa."

The HawthoRN actress then took to her Facebook to "change" her statement, writing, "Will and I BOTH can do WHATEVER we want, because we TRUST each other to do so. This does NOT mean we have an open relationship . . . this means we have a GROWN one."