The sexual orientation of two puppets has long been the subject of curiosity. And now a longtime “Sesame Street” writer has added more reason for speculation.

Mark Saltzman, who wrote on several episodes of the children’s program over the course of 13 years, said in a recent interview that when he wrote for Bert and Ernie, he thought of them as gay.

“I always felt that without a huge agenda, when I was writing Bert and Ernie, they were. I didn’t have any other way to contextualize them,” he told Queerty in an interview published Sunday.

Sesame Workshop, which produces “Sesame Street,” has long tried to shut down speculation over the sexuality of the characters.

“As we have always said, Bert and Ernie are best friends,” the workshop said in a statement Tuesday. “They were created to teach preschoolers that people can be good friends with those who are very different from themselves. Even though they are identified as male characters and possess many human traits and characteristics (as most Sesame Street Muppets do), they remain puppets, and do not have a sexual orientation.”

That statement is almost the exact same one the workshop released in response to a 2011 online petition asking the show to marry the characters.

Though the show has insisted that Bert and Ernie do not have a sexual orientation, that hasn’t stopped pop culture from playing off the speculation over the nature of their relationship.

The musical “Avenue Q” spoofs Bert and Ernie as Rod (who is gay) and Nicky (who is straight). In 2013, Bert and Ernie were depicted cuddling on a couch and watching the Supreme Court on TV on a 2013 New Yorker cover about the landmark decision that struck down a key part of the Defense of Marriage Act.

The cover’s artist, Jack Hunter, originally submitted the image on Tumblr. “It’s amazing to witness how attitudes on gay rights have evolved in my lifetime,” Hunter told the New Yorker. “This is great for our kids, a moment we can all celebrate.”

Saltman said in the interview with Queerty that “the New Yorker cover was kind of vindication.” He also saw Bert and Ernie as analogs for his relationship with his partner, film editor Arnold Glassman, saying “more than one person referred to Arnie and I as ‘Bert and Ernie.'”

He continued: “That’s what I had in my life, a Bert and Ernie relationship. How could it not permeate? The things that would tick off Arnie would be the things that would tick off Bert. How could it not? I will say that I would never have said to the head writer, ‘oh, I’m writing this, this is my partner and me.'”

Bert and Ernie were among the first Muppets on “Sesame Street,” appearing in the show’s 1969 test pilots. Michael Davis writes in “Street Gang: The Complete History of Sesame Street” about the first time Bert and Ernie were picked up by creator Jim Henson and famed puppeteer Frank Oz.

According to Davis, “Muppets most often evolve in an organic way,” and it can take more than a year to figure out their personalities and the right actor to play them. But during one rehearsal in 1969, it became quite clear what personalities Bert and Ernie would have.

“Gradually a relationship emerged which reflected the real-life Jim-Frank relationship,” Davis quotes Jon Stone, writer and director on the show, as saying. “Jim was the instigator, the teaser, the cutup. Frank was the conservative, careful victim. But essential to the rapport was the affection and respect which these two men held for each other. Ernie and Bert were best friends; so it was with Jim and Frank.”