04/09/2012 01:54 pm ET Updated Apr 09, 2012

Kris Humphries Wonders If Kim Kardashian Cheated While They Were Married: REPORT

Kim Kardashian's divorce is about to get even nastier.

The reality star decided to end her marriage and now she's reportedly the first to move on, but according to new reports her soon-to-be-ex-husband, Kris Humphries, is now wondering if Kim was ever even faithful during their short marriage. RadarOnline reports that since Kris found out about Kim's reported romance with Kanye West, he's doubting her fidelity.

"Kris knows for a fact that this dalliance between Kim and Kanye has been going on for at least the last two years," an insider claims. "Kim kept in touch with Kanye after she married Kris and promised him that she would cut off communication with him, but she never did."

Although Kim claimed that she and Kanye “have been friends for years” on the "Today" show, Kris has intimate knowledge of the well-oiled Kardashian publicity machine. And he is suspicious of the timing of the dating rumors, because a new season of "Keeping Up With the Kardashians" is premiering in May, and Kanye released a new album, says the source.

Rumors that Kim and Kanye were dating started after the rapper released the song "Theraflu," in which he confesses to having feelings for the 31-year-old reality star. The two were then spotted on a date, on which they saw "The Hunger Games" and had dinner at Serafina on Wednesday night. Kim was spotted leaving Kanye's New York City apartment on Thursday morning, wearing the same leather pants and sleeveless T-shirt she was sporting the previous night.

It all seems too well-orchestrated, according to RadarOnline's insider. "[Humphries] knows that Kanye never would have recorded those lyrics about Kim without her permission, period. [He] wonders if Kanye is going to drink the 'Kardashian Kool Aid' as he calls it, because if you aren't a family member and don't fall in line with what Kris Jenner dictates, you are persona non grata," said the source.

TMZ reports that Humphries is completely indifferent to news Kim has moved on, but RadarOnline reports the NBA player told his pals he wanted to wish Kanye luck and warn him that he's going to need a lot of patience if he's really going to date Kim.

Dating rumors just add fuel to the fire in the war of words that is the Kardashian-Humphries divorce. Neither Kim nor Kris has directly accused the other of anything, but both have been using their family and friends to do their dirty work and make the other seem less sympathetic.

But even if Kim and Kanye's relationship is a publicity tactic, it's not doing Kim any favors. Humphries has good reason to wonder if Kim was cheating on him during their marriage, as Kanye's ex-girlfriend Amber Rose claimed to Star magazine in January that Kim used to cheat on ex-boyfriend Reggie Bush with Kanye. And there's that old adage, "Once a cheater always a cheater."

More of Kim's exes:

Kim Kardashian's exes