*Former NBA star Antoine Walker is being sued for $5,000,000 by a man claiming the athlete stole his fiancée, and then laughed in his face.

In the lawsuit filed Tuesday in Chicago, Kevin Jenkins says he actually caught his fiancée having “an intimate moment” with Walker back in October — but when he approached the two, “Mr. Walker taunted and laughed at Jenkins with the intent of causing him emotional distress.”

As first reported by MediaTakeOut.com, Jenkins claims he became such an emotional wreck afterward, he thought about killing himself.

Walker, meanwhile, was once engaged to Evelyn Lozada of VH1’s “Basketball Wives.” [See photo below.] She has also moved on and is currently the fiancée of NFL’s Chad Ochocinco.