Camille Grammer's ex-husband, Kelsey, reportedly engaged in a "sexual encounter" with his daughter's babysitter years ago.

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Prior to his current marriage to Kayte Walsh, Kelsey was married to Camille, and on Twitter last night, Camille revealed some shocking details about her former partner's past.

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According to Camille, Kelsey's affair was revealed years ago, at the time Justin Bieber hired Black to represent him in one of his cases, but no one took much notice to it and the allegations quickly went away.

Earlier this year, Camille apppeared on an episode of Watch What Happens Live, where she discussed her relationship with Kelsey with host Andy Cohen.

"It's very difficult because he refuses to communicate with me and coparent with me on any level," Camille claimed, according to Us Weekly. "So what I do is: My kids go to therapy. I go to therapy. I used to think that there would be a day that would come along that someday I could coparent with him, and he would be willing to talk to me because it would only help the kids."

"He's just got to accept this and learn to hate me last and love his children. He's got to think of his children first," she continued. "It's just been difficult. I take it one day at a time."

For more Camille Grammer, check out her chat with Cohen below.