“Mad Men” co-stars Jon Hamm and Elisabeth Moss are rumored to be spending quite a bit of time together behind-the-scenes of their hit AMC show.

Despite Hamm’s longtime romance with actress Jennifer Westfeldt, In Touch Weekly insinuated Thursday that the longtime cast mates might be secretly dating. While a rep for Hamm, 43, and Moss, 31, has confirmed that the actors are reportedly “just friends,” an eyewitness to one of their recent outings is claiming otherwise.

“I saw them at Disneyland on Easter,” said a witness to the duo’s Anaheim, Calif., theme park trip. “It was just the two of them. They were walking around the park, trying to be incognito,” added the source.

The “Mad Men” stars alleged date comes on the heels of their Starbucks outing in New York on April 23. In photographs obtained by Just Jared, the pair can be seen walking side-by-side and appearing to try to blend in, both stars wearing long coast, hats and sunglasses.

“My first thought was that they’re both dressed kind of like they’re trying to hide their identities,” reads a TheFrisky.com report regarding Hamm and Moss’ coffee jaunt, adding, “Therefore they must be having a secret affair.”

Jon Hamm, Jennifer Westfeldt Actors Jon Hamm and Jennifer Westfeldt at the 2014 Vanity Fair Oscars Party. Photo: REUTERS

Contradictory to the tabloid's report, Hamm appears to still be linked to Westfeldt, his girlfriend of 16 years. The couple, who first became an item in 1997, were last spotted together at the opening of Westfeldt’s off-Broadway play “The Library” in New York’s The Public Theater on April 16.

Moss, previously married to “SNL” star Fred Armisen, was last linked to Tom Cruise. Due to her Scientologist beliefs, the TV star was reportedly pegged as a potential future wife for Cruise, 51, the National Enquirer reported last month. “Friends think it would be great for them both- and Scientology,” an insider told the tabloid. “Lizzie is beautiful, smart and a little quirky. She can hold her own in the spotlight and marrying Tom would be good for both their careers," added the source.

“Mad Men” is currently in its seventh season. The series airs Sundays at 10 p.m. ETD on AMC.