Amber Rose and Kim Kardashian's ex-husband Kris Humphries were recently spotted "flirting up a storm" at a Hollywood party at the Playboy Mansion.

And Hollywood Life reports the pair's antics may have even gone a lot farther than that, with some witnesses claiming at one point the two were "getting intimate with PDA."

"Amber and Kris were not only flirting, but getting intimate with PDA," a source told the website. "They were all over each other at the bar for a while."

Rose was once the paramour of Kardashian's current husband Kanye West, and Kardashian and Humphries were once infamously married for all of 72 days before abruptly and publicly splitting. In recent times, since splitting from husband Wiz Khalifa, the 31-year-old Rose has been linked to rapper Machine Gun Kelly.

But on this night, the spotlight belonged to Rose and Humphries.

"Amber was walking from the Grotto to the dance floor," a source added. "Kris was walking towards the Grotto. I think one of Kris' friends said something to her then Kris said 'hi'. It took him a second to realize who she was. They both started smiling and talking then the four of them walked together towards the dance floor. That is when they separated and hung out by the bar together. "

The timing of Rose's dalliances with the 30-year-old NBA veteran strikes some as rather odd, given she recently extended an olive branch to Khloé Kardashian in apparent hopes of ending their feud. The recent tension stemmed from Rose's diss of Khloé's teenage sister Kylie over dating much older rapper Tyga.

At the time, the 37-year-old West didn't seem too moved by the sincerity of his ex's overture.

"Kanye despises Amber and nothing she ever says will make that better," said a source. "She has said things about him and his family he will never forgive. He sees her working and he knows her apology and interview was just another way for Amber to profit off of him and the Kardashians."