EXCLUSIVE: 'Riverdale' Star Madelaine Petsch Addresses Those 'Twincest' Rumors Between Cheryl and Jason!

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Was there a budding relationship between the Blossom twins?

It's a question that all Riverdale fans have been pondering since the smash CW drama first premiered, and now it's finally time to address those twincest rumors between Cheryl and Jason Blossom.

Rivedale star Madelaine Petsch stopped by the ET studios for a Live Facebook interview on Wednesday, and the redheaded beauty spilled her thoughts on whether or not Cheryl and Jason's feelings for each other were ever more than just sibling affection.

"We [in the Riverdale cast] thought [the term twincest] was funny in the beginning, but now actually people genuinely believe it," the 22-year-old actress explained. "We never were incestuous and it's honestly like a joke that we played around with on set that probably was taken a little bit too far."

EXCLUSIVE: Watch Molly Ringwald's First Scene as Archie's Mom on 'Riverdale'!

"My way of explaining it is just that Cheryl doesn’t feel love from her parents. Her parents have never really ever given her any kind of coddling," Petsch said, adding that the Blossoms are TV's most "awful" parents. "Jason had to take care of her and he took her under his wing so she got this like sense of a dad, brother, mom all in one human and he was the one person who unconditionally loved her."

Petsch continued, "And also they're twins so they had this strange bond that nobody else understands and a lot of the town chalks it up to like twincest when in reality he was just, like, her person -- her best friend, her mom, her dad, her brother-- the person who takes care of her. So losing that turned her even more into like a miserable human being."

On the contrary, ET also recently caught up with Riverdale executive producer Roberto Aguirre-Sacasa at a small Q&A in Los Angeles, and the showrunner confirmed to a room full of reporters that the twincest vibes between the Blossoms were very much intentional. "It feels like from the first time they appear in that red car in the matching outfits holding hands that we were going for that," he said.

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"It's interesting because growing up, one of the books I loved was obviously Flowers in the Attic," Aguirre-Sacasa said of the 1979 novel about two fraternal twins who fall in love with each other. "That's how I always thought of the Blossosms."

"And it's funny, as I was working on the Riverdale pilot, it was around the time that Lifetime revamped, they did the must-see remake of Flowers in the Attic, and I was like, 'Oh my god, the Blossoms!" the showrunner continued. "And I had worked on these characters in the comic book Afterlife With Archie, and definitely played that up."

"All I can say is there's still more incestuous stuff to come," Aguirre-Sacasa added.

Riverdale airs Thursdays at 9 p.m. ET/PT on The CW.

Dying for more Riverdale secrets? Press play on our full interview with Madelaine Petsch below to find out more about the season one finale and what Cheryl is really drinking in those milkshakes from Pop's!