JANET JACKSON’s billionaire hubby has a NASTY secret in his past!

Jackson may have to cover up her body for new billionaire husband, Wissam Al Mana, after reportedly converting to Islam, but that was never the case for Wissam’s former flame – Gwen Rogers, a stripper and Playboy Playmate.

Rogers, a well-known Washington, D.C. based stripper and nude model – she graced the pages of Playboy five times including the Women of Washington issue in 1988 — told RadarOnline.com that she dated Wissam, who she met when he was a student at George Washington University.

“Yes, Wissam and I dated. He was a great guy, very private,” Gwen said.

 “I met him when he was a student. He was very religious. I wish him and Janet all the best and that’s all I want to say about him.”

Gwen was just as shocked as the rest of the world when she heard the news that her ex-lover had married the Rhythm Nation singer.

On April 7 Gwen wrote on her Facebook page: “BREAKING NEWS: I just hears on the radio that Janet Jackson DID convert to Islam…after marrying one of my ex-boyfriends… Wissam Almana.”

The notoriously private Jackson secretly married the Qatari-born retail entrepreneur during a hush-hush ceremony in 2012.