Kim Kardashian's BFF and reality star Jonathan Cheban went face-to-face with Kim's ex Kris Humphries at Monday's New Jersey Nets game at the Prudential Center in Newark.

While Cheban sat courtside, we're told the crowd wasn't kind to either of them ... booing and heckling the two guys throughout the entire game.

The Spin Crowd star, who has season tickets, Tweeted: "Fun night at the Nets game!"

Yeah ... fun AND awkward!

In a recent episode of Kourtney and Kim Take New York, Humphries asked Cheban if he was gay. As a result of the accusation, reports claimed Cheban had plans to sue Kim's ex for $5 million. However, Cheban says he has no plans to sue.

Looks like these two are ready to move on ... but this particular basketball crowd, not so much.