Sibling love.

Barry Williams admitted that he had “chemistry” with his “The Brady Bunch” co-star, Maureen McCormick, when they played brother-sister duo Greg and Marcia Brady on the beloved sitcom .

The pair’s dynamic was explored by Williams, 71, and producer Lloyd Schwartz in The CW’s new docuseries, “TV We Love.”

“I remember the scene, I remember the day,” Williams recalled on the second episode of the seven-part docuseries. “I remember the day Lloyd discovered that there might have been a little bit too much attraction between brother and sister.”

“Maureen McCormick is very, very attractive… so I was, you know, gravitated right to her, and it was coming out in our scenes together,” Williams added.

Lloyd, son of “The Brady Bunch” creator Sherwood Schwartz, directed a 1973 epis

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