‘In Touch’ has exclusively learned that Joe Giudice was unfaithful to his imprisoned wife Teresa Giudice, hooking up with a 30-year-old party girl named Jamie Jackson.

According to sources, along with photos obtained by ‘In Touch,’ Joe spent weeks wooing Jamie. On their fourth rendezvous, the two hooked up in Atlantic City, sources told ‘In Touch’ exclusively.

The new issue of ‘In Touch’ features photos of the pair.

Teresa is in prison at the Federal Correctional Institution in Danbury, Conn., serving a 15-month sentence for fraud.

Joe and Jamie were spotted “full-on making out” in the Tropicana hotel, one eyewitness tells ‘In Touch,’ adding, “They were chugging margaritas and seemed drunk out of their minds.”

That might explain what happened next. “Joe and Jamie went back to the room and things got crazy,” says an insider with knowledge of the situation, who adds that another couple and some friends joined them inside the Merv Griffin suite at Resorts Casino Hotel.

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The pair were first introduced through friends over a three-hour meal in Newark, N.J.

When reached for comment by ‘In Touch’ on March 9, Joe initially denied knowing Jamie, stating, “I have no idea who you’re talking about,” before eventually admitting she was “with a friend of mine. Maybe I had an arm around her [at Carmine’s].” When asked to explain why there are photos of him with Jamie inside a Resorts hotel room, he replied, “Um, we were at a business meeting.”

For more on this story, check out what ‘In Touch Weekly’s’ own Noah Levy has to say on ‘The Gossip Table!’ Get the inside scoop daily by tuning in to ‘The Gossip Table’ weekdays at 10 AM on VH1!