Holmes is where his heart is

AMID reports that Katie Holmes has broken up with her not-so-secret boyfriend Jamie Foxx — the split seems to be news to Foxx, who was telling pals that he’s expecting Holmes to join him at a hotel opening in Atlantic City, NJ.

Foxx was in the area for the opening of the new Ocean Resort Casino — and we hear he was filming with Mark Wahlberg the night before, for Wahlberg’s A&E show, “Wahlburgers.”

A source told Page Six, “Jamie was telling friends he’s expecting his girlfriend Katie Holmes to join him in AC.” He added that “Katie’s daughter, Suri, wouldn’t be coming down — because she was in summer camp.”

But reports on Wednesday said Holmes has dumped Foxx because “Katie just couldn’t get over her trust issues.” Radar Online added of the alleged split that there was “no drama . . . just sadness when Katie called up Jamie to tell him she couldn’t do this anymore.”

Our spies said Foxx was keeping it together in Atlantic City, where he indicated he and Holmes are still a pair and would see each other there.

While filming Wahlberg’s show “in a tight red-white-and-blue tracksuit” at the casino’s American Cut restaurant, Foxx “was fending off female fans who swarmed him as he walked through the restaurant.”

Spies added that at the casino’s opening, Foxx led a conga line of 1,000 and had a DJ alternate between Prince and Michael Jackson songs.

Wahlberg is behind a planned eatery at developer Bruce Deifik’s Ocean Resort Casino as the latest outpost of his family’s growing Wahlburgers chain. Wahlberg and Foxx were also seen touring the place’s nightclub, HQ2.

Foxx’s undercover relationship with Holmes has become one of Hollywood’s worst-kept secrets: They’d been rumored to be a couple since 2013, but have never publicly commented. He even abruptly left an ESPN interview this year when the subject was turned to Holmes.

A rep for Foxx did not comment. Holmes’ rep told People the split was “100 percent untrue.”