Lopez's beau 'signed confidentiality agreement'

Jennifer Lopez's boyfriend Casper Smart is legally bound to be silent about their relationship.

The 43-year-old superstar and the 25-year-old backup dancer began dating a few months after Jennifer separated from her third husband Marc Anthony in July 2011.

Jennifer, who is still contending with legal battles from her yearlong marriage to ex-spouse Ojani Noa, is not at all interested in getting litigious with lovers again.

The star is not naïve about where things could lead should her romance with Casper become embittered.

"Casper signed a non-disclosure/confidentiality agreement when he began working for Jennifer Lopez, as she requires all of her employees to do,' a source told Radar Online.

"Jen has been around long enough to know that anyone she dates could possibly turn on her and choose to go to the press if the relationship sours. Casper had absolutely no qualms about signing the agreement, and has told Jen on multiple occasions that even if he didn''t work for her, he would have signed the contract. Jen loves him even more for that."