Star claims Smart checked out a "XXX peepshow" at a known "gay cruising spot," while In Touch quotes an exotic masseuse named Bibi as saying he has "strong muscles."
Lopez's legal team called the stories "false, malicious and defamatory," and railed that they could cause "immense damage" to the pair's reputations and careers.
Smart, whose rep succinctly told Radar Online in June that he's "not gay," was snapped at the seedy locale just a day before he hosted a yacht-set surprise party for Lopez's birthday.
Photographers were conveniently on hand to capture every aspect of the celebration, including the couple's kiss in front of a huge, custom-made bear cake (J.Lo and Casper call each other "Bear").
Smart, who was recently promoted to Lopez's tour choreographer, also presented the birthday girl with a pink diamond teddy bear necklace.
Lopez, for her part, has been dropping major hints about taking another walk down the aisle. Click on ...
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