She made him look like a fool!

Kendall Jenner was enjoying a steamy fling with NBA star Ben Simmons for about a week before she was photographed making out with Gigi and Bella Hadid's little brother Anwar in NYC, and her switch-a-roo has made the athlete feel like yesterday's garbage.

"Ben’s use to being a player on the court but feels Kendall stepped over him. He thinks she’s the true player! He was in awe seeing those pictures and was like, ‘Wow. Just wow," a source dished to Radar.

The Philadelphia 76ers star has reportedly been texting the cover girl incessantly demanding answers as to why she left him in the dust and publicly embarrassed him, but she hasn't responded.

"He’s feeling extra salty over how Kendall did him,” the source added.

Kenny and Anwar wasn't a one-time deal, either! The two were caught heading into Gigi's Big Apple pad within minutes of each other yesterday, so you know what that means. They're totally heating up!

"Anwar and Kendall are just having fun for now. Both of them recently got out of relationships, and don't want anything too serious. Kendall is best friends with Anwar's sisters, Gigi and Bella, and she respects them tremendously. Kendall would never want to do anything to put her relationship with Anwar's sisters in jeopardy. Kendall and Anwar have known each other for years and have always been flirtatious and this is just another sign of that. The two enjoy one another's company and things could change, but for now, it's nothing serious," a source told ET.

Don't hate the player hate the game, Ben!