Less than 24 hours after rumors surfaced of his cheating, Will Smith was seen partying with his long-time wife, Jada Pinkett Smith, their children, and Will's son Trey.

According to Us Weekly, the blended family was spotted in Las Vegas, where they were celebrating Trey's 21st birthday (you'll recall that Trey was the inspiration behind Will's hit song "Just The Two Of Us," and was also the child heard at the end saying, "How much am I getting paid for this, Dad?" Feel old yet?) at Hakkasan. Will and Jada, in particular, "were in high spirits, rarely leaving one another's side," a source told the magazine. They even snuck a few happy moments together away from the rest of the revelers.

This all stems from rumors sparked by photos obtained by Star Magazine, which shows Will and his "Focus" co-star, Margot Robie, laughing and joking around. Robie was seen in the pictures exposing her lace white bra, and Will was exposing his bare chest. According to The New York Daily News, Robie took to her Twitter to slam the cheating rumors when they began, calling them 'ridiculous' and 'untrue.' "It's disappointing that goofing around on set could be taken so out of context," she said.

For her part, Jada Pinkett Smith has said in the past that Will Smith "is his own man" and he can "do whatever he wants." This initially led to speculation that the duo -- who have been married for more than 15 years -- have an open marriage. In addition, shortly before the pictures leaked, Jada was seen on the red carpet without her wedding ring. But all of that, she said, is evidence not of an "open" marriage, "but a grown one."

So...what's your take on all of this? Do you think Will Smith is cheating? Do you think he has an open marriage? Or do you think this is all a publicity stunt to promote his latest film, "Focus"? Leave your thoughts in the comments below!