Chaz Bono Betrayed By Ex-Fiancée Jennifer Elia

When Chaz Bono announced his shocking split from fiancée Jennifer Elia on Dec. 19, the pair claimed they left their relationship with "great love, respect and affection toward one another."

But as Star has exclusively learned, there is a sordid secret behind the collapse of this 6-year union: Jennifer betrayed Chaz in the worst way possible — by cozying up to his ex!

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Jennifer was a guest at a private party hosted by Chaz's ex-girlfriend Heidi Shink at her L.A. home in mid-November. "There was a ton of wine and food," Viktor Budnik, who attended the party, tells Star in an exclusive interview. They were doing wine pairings." 

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And Chaz was nowhere to be seen. As the party got increasingly boozy, people started taking intimate photos that Heidi later posted on her public Facebook page. One shot of Jennifer and her party guests is captioned "La familia!" In another shot, Jennifer is pictured inappropriately clad in pajamas with wet hair.