The actor was still married to Sheree Zampino when he fell in love with his 'Six Degrees of Separation' co-star
Will Smith is opening up about his feelings for a former co-star.
In 1993, the actor starred in "Six Degrees of Separation" as Paul Poitier, a mysterious young man who intrudes upon the lives of an affluent couple played by Donald Sutherland and Stockard Channing.
At the time of filming, Smith was newly married to his first wife, Sheree Zampino, the mother of his son Trey.
In an excerpt of his upcoming memoir "Will," shared with People magazine, the 53-year-old star recalled when he "fell in love" with Channing, following in the footsteps of his character.
"Sheree and I were in the first few months of our marriage with a brand-new baby and for Sheree, I can imagine that this experience was unsettling to say the least," he said of staying in character even when off the movie set.
"She'd married a guy named Will Smith and now she was living with a guy named Paul Poitier," he continued. "And to make matters worse, during shooting I fell in love with Stockard Channing."
Smith said that when filming on the New York-set flick wrapped, he and his wife took their son back to Los Angeles.
"Our marriage was off to a rocky start. I found myself desperately yearning to see and speak to Stockard," he explained.
Reps for the actress did not immediately respond to Fox News' request for comment.
The "Will" excerpt isn't the first time he's addressed his connection to Channing, a veteran stage and screen actress perhaps best known for playing Rizzo in the film adaptation of "Grease."
"With ‘Six Degrees of Separation,’ I got a taste early of the dangers of going too far for a character," he told Esquire in 2015. "My character was in love with Stockard Channing's character. And I actually fell in love with Stockard Channing."
"I was like, 'Oh no! What have I done?'" he recalled. "That was my last experience with Method acting, where you're reprogramming your mind. You're actually playing around with your psychology. You teach yourself to like things and to dislike things."
He added that method acting – fully immersing yourself in a character, physically and otherwise – can be "really dangerous."