Jamie Foxx Is Living a Double Life: “You Wouldn’t Think He Had a Girlfriend From the Way He Was Acting” (EXCLUSIVE)

Between cozying up with mystery brunettes to secretly texting his ex, Jamie Foxx is no stranger to jeopardizing his relationship with Katie Holmes. That said, it seems things have taken a drastic turn for the worse. Why? Because it's happening more and more frequently and Katie is, sadly, none the wiser.

A source tells In Touch exclusively that Jamie, 50, has a wild streak that was on full display during an alcohol-fueled night he spent without Katie at a West Hollywood hot spot on May 2. "He was out of his mind. He was so flirtatious," says the source. "You wouldn’t think he had a girlfriend from the way he was acting. He was grabbing girls' hands, pulling them up close to him and dancing with them. Jamie obviously pretends to be a nice guy when he's with Katie, but she needs to watch out."

Beyond being a boyfriend, Jamie is a father of two — Corinne, 24, and Annalise, 8 — and this kind of reckless behavior is damning on both accounts. Adding insult to injury, Katie is a totally dedicated parent. Despite being only 39 years old, the mother-of-one has always put her daughter Suri, 12, first. "When I’m not on set, I’m being a mom. I’m doing mom stuff," she recently said. “When I go to an event, I leave by 10 p.m."

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In most instances, Jamie is just getting the night started at that hour! "Jamie wants to be young still," says the source. He enjoys the stability that his cookie-cutter relationship provides, but "[Jamie] doesn't want to sit at home. He's not ready. He wants to live his life."

If the former Dawson's Creek actress thinks she's going to make an honest man out of him, she shouldn't hold her breath. "He’s a party boy at heart," comments an insider. "That’s never going to change."

For more on this, pick up the new issue of In Touch magazine, on stands now!