Kourtney Betrayed? Scott's Caught Cheating In Xanax & Cocaine Fueled Sex Romp, Devastating Magazine Report Claims

Scott Disick was allegedly caught cheating on baby mamma Kourtney Kardashian, as Australia's FAMOUS magazine published images of him and another woman.

A friend of the woman told FAMOUS that Disick "had sex with my friend all week and was really interested in her" during a trip to New York City.

"Through the next four days, he spent most of his time with his new love interest," the source told FAMOUS.

"She stayed and slept at the hotel ... and took care of him while he was drunk and on drugs," she claimed to FAMOUS.

The magazine published photos including the cheating reality TV hunk on the couch partying with the brunette beauty; a shot of the hotel suite the trysts took place in; and intimate selfies of the woman's legs.

The hook-up allegedly occurred while Disick was "partying" in New York City with a group, with "The Lord" inviting the crowd back to his SoHo New York suite to keep the drug party going, the source told FAMOUS.

"At first, his guard took our phones away," the insider told FAMOUS. "But then Scott wanted more drugs, so he gave everyone back their phones so he could get more from people that had connections," she claimed.

The drugs included cocaine and Xanax, according to the report.

"Kourtney kept calling," the friend told the magazine, "but Scott wouldn't answer."

As RadarOnline.com previously reported, Kourtney had recently taken to keeping an eye on Scott's bank books to untangle his web of cheating. The couple have three children -- son Mason, daughter Penelope and infant son, Reign Aston Disick.