Kourtney Kardashian Paternity Scandal: Model Michael Girgenti Wants Paternity Test For Reality Star's Son Mason

Kourtney Kardashian is involved in a paternity scandal after a model claims he had sex with the reality TV star nine months before she had her first son Mason.

"We started kissing, making out and touching each other,” Michael Girgenti of Chicago tells InTouch magazine.

“My shirt was off. We were fooling around on the couch a little while before I took her to the bedroom.”

The 26-year-old Girgenti then says he and Kardashian undressed and were intimate and did not use protection, as he assumed she was taking birth control. She and her longtime boyfriend, Scott Disick, were on a break during this time, he says.

Girgenti claims he tried to contact Kourtney after the March 2009 encounter, but he was continuously ignored.

The Kardashian sister gave birth to Mason Dec. 14, 2009.

Kardashian and the Los Angeles-based model worked together in 2008 on a “944” magazine photo shoot.

"I would definitely want to acknowledge Mason if he's my kid," Girgenti said, according to The Daily News. "He deserves to know his real father."

Kardashian has denied the allegations.

"They did not exchange contact information. Since the Aug. 20, 2008, on-set photo shoot, Kourtney never spoke with him, saw him nor met him again. Kourtney has never been alone with him, and Kourtney certainly has never physically/intimately been with Mr. Girgenti," her lawyer tells InTouch.