On vacation with Jennifer Lopez, Ben Affleck squeezes in a casino stop.

On vacation with Jennifer Lopez, Ben Affleck squeezes in a casino stop.

Ben Affleck and Jennifer Lopez have been sailing around the Mediterranean, but in between romantic strolls and shopping trips, the “Argo” star found time to indulge in another of his great passions: gambling.

Film Vodka spies caught up with Affleck, 48, in a Monte Carlo casino earlier this week, when he was rumored to have spent hours at the tables alone in a 007-style black suit and a crisp white shirt.

A photo of the actor at a casino table with his arm around Lopez's waist, playfully drawing her close, has circulated on social media. J.Lo, 52, was also seen speaking with her crew outside of the table.

Ben Affleck stopped at a Monte Carlo casino during his romantic getaway with Jennifer Lopez.

Cobra Team / BACKGRID

Affleck, who is known for his poker skills, was spotted visiting a Las Vegas  casino gambling solo until 3 a.m. in a black T-shirt and a baseball cap. 

While in Sin City, he was also seen with Lopez's mother, Guadalupe Rodrguez, at the Wynn resort, where Film Vodka was told he was filming a new project.

Affleck has acknowledged that he was once barred from playing blackjack at a Las Vegas casino. “That is a genuine story,” he claimed in a 2014 interview. I spent considerable time learning the game and eventually became a competent blackjack player. When I became decent, the casinos told me I couldn't play blackjack anymore. I mean, the fact that winning in a casino is against the rules should tell you something about casinos.”

“I had always enjoyed blackjack,” he added. Other than that, I don't play any other games of chance. I don't wager on football games, and I don't gamble in any way other than that. But I heard there was a technique to increase your odds at blackjack. As a result, I began to study.  And then I just got to a point in my life where I’m like, ‘If I’m going to do something, I’m going to try and do it really well.’ It was sort of presented like I did something illegal.'”

Affleck was previously spotted at a Las Vegas casino.

Brian Prahl / MEGA

Affleck was also said to be a participant in Molly Bloom's alleged high-stakes Hollywood poker game, which included Tobey Maguire and Matt Damon.

The “Way Back” actor and Lopez, who renewed their romance after 17 years apart in April, have spent much of July touring Europe — and narrowly avoiding the “Let's Get Loud” singer's ex-fiancée Alex Rodriguez, who is also in the region with NFL reporter Melanie Collins and other pals.

“They spent the day together, and he seems happy,” a source claimed of Bennifer in Monaco.

Since then, the pair has relocated from the French Riviera to the Amalfi Coast in Italy.

Affleck's representative did not respond to a request for comment.