Kourtney Kardashian’s estranged baby daddy Scott Disick has been partying in Mexico, but sources tell Page Six that any girls who come back to his villa must sign non-disclosure agreements so they can’t dish any dirt on The Disick.

He left a Malibu rehab in November, but has been pictured partying poolside in Puerto Vallarta this week with gals in bikinis. Spies said he’s been hanging with wild college kids on spring break — but isn’t taking any chances.

“Scott’s staying in a villa outside Puerto Vallarta,” said one source, adding that the place belongs to “Girls Gone Wild” mogul Joe Francis.

Disick, 32, has brought women back, but they’re asked on arrival to sign NDAs and check smartphones at the door in baggies so no surreptitious selfies can be snapped.

But once Disick gets the girls back to his party palace, “All he talks about is the custody” situation with his kids, a source said. “He’s Mr. Doom and Gloom.”

TMZ reported that Kardashian agreed to let Disick co-parent their three kids as long as he stays sober. But pics show him seemingly drinking a cocktail and a beer in Mexico.

Our spies said he’s also been seen two nights in a row at a nightclub called La Santa.

A rep didn’t get back to us.