It's a sad day in the world of Hollywood relationships.

Rumors are swirling that Jennifer Lopez and Marc Anthony's marriage is at the breaking point.

Last week, Lopez appeared at the premiere for "The Curious Case of Benjamin Button" without her 8-carat engagement ring, wedding band or even her husband, who is generally photographed by her side.

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According to a report in Us magazine, whose cover story claims that the couple's marriage is in crisis, Marc Anthony was spotted just one week before the premiere without his wedding band.

"They both didn't wear their rings on purpose," a source told Us.

So what is the reported reason for the split? Us magazine cites several, including Marc's controlling ways and his alleged wandering eye.

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Shortly after a "tense" Thanksgiving, Anthony was spotted at Bungalow 8 and Marquee, where he was spotted "with his hand on a woman's thigh and overheard complaining about his wife to a group of women," Us said.

TMZ snapped pictures the next night of the singer in Vegas partying with Eva Longoria Parker.

But it's not just Marc's issues that are reported to be causing a rift between the couple, who renewed their vows in October and welcomed twins Max and Emme earlier this year.

According to Us, Jennifer is unhappy just being a "Long Island housewife" and blames Anthony for the demise of her career as a box-office star.

Say it isn't so!

Click here to read more from Us magazine.