Reggie Bush may have faced his toughest opponent yet: ex Kim Kardashian! The two came face to face at the July 17 LA wedding of her actress pal Khadijah Hagg and his New Orleans Saints teammate Bobby McCray.

"It was difficult for the both of them, and they tried their best to avoid each other," an insider tells Life & Style. "Their families were there, and Reggie's family talked to Kim, and Kim's family talked to Reggie."

Even though Kim has been dating Dallas Cowboys wide receiver Miles Austin, and Reggie's been spotted out partying with various new women, both she and her ex arrived solo and spent the reception in their respective corners doing shots with their friends.

"But as the wedding was breaking up, Reggie finally walked over to Kim, and they talked for 10 minutes," says the insider. "It was awkward at first, but after a few minutes they seemed to relax. Reggie was being sweet, and Kim was smiling. Then he hugged her when they were done talking."

A peaceful interaction it was but don't count on the two, who split in March, reconciling. "Kim has moved on," a second insider tells Life & Style.

For more on Kim and Reggie, pick up this week's issue of Life & Style, on newsstands tomorrow!

Photo Credit: Startraks