It seems as though whenever there are rumors suggesting that LeAnn Rimes' marriage to Eddie Cibrian might be in trouble, the couple will go out of their way to prove their critics wrong. An eyewitness say that the controversial duo were apparently "inseparable" as they were packing on the PDA during a private concert in Malibu recently.

LeAnn Rimes News 2015: Singer Shares Candid Photo Of Husband Eddie Cibrian With His Son Jake

According to Rumor Fix on Tuesday, Rimes and Cibrian attended the Malibu home of designer Michael Lee for Project Angel Food's performance by piano virtuoso Andrew von Oeyen.

The site reported that, "Eddie and LeAnn were touchy freely the whole afternoon. And the guests described them as "down to earth." Eddie and LeAnn even sat on steps during the 1 1/2 hour concert instead of opting for some of the reserved sofa seats."

LeAnn Rimes Shows Off Her Amazing Figure In A New Selfie She Posted On Instagram

Meanwhile, there was a report that alleged Rimes has installed cameras all throughout their home in fear that her husband might cheat on her while she's away.

According to Star Magazine's print edition last week (via Gossip Cop) Rimes was supposedly "mistress-proofing" her home in Los Angeles before she jetted off to London this past week in order to keep an eye on her husband.

An insider said, "LeAnn can see what cars come in and out, as well as what cars drive past on the street out front. And if she wants to check if Eddie's car is in the driveway, she can."

A rep for the couple told Gossip Cop that the story is "completely ludicrous" while a second insider said the report was "garbage."