Bert and Ernie are gay.
https://nypost.com/2018/09/18/bert-and-ernie-are-gay-lovers-sesame-street-writer-reveals/
Bert and Ernie are more than just friends, according to “Sesame Street” writer Mark Saltzman.
Saltzman, who joined the show in 1984, told Queerty the two puppets are a gay couple and their relationship is a reflection of his partnership with film editor Arnold Glassman.
“I was Ernie. I look more Bert-ish. And [Arnold] as a film editor — if you thought of Bert with a job in the world, wouldn’t that be perfect? Bert with his paper clips and organization? And I was the jokester,” he revealed to the LGBTQ blog. “So it was the Bert and Ernie relationship, and I was already with Arnie when I came to ‘Sesame Street.'”
The two puppets have been living together as roommates at 123 Sesame Street for the past 49 years but slept in separate beds.