Selma Blair’s teen son Arthur has crossed a major first off his list: he’s finally watched one of his mom’s movie’s, something Blair told People she’s tried — and failed — to get him to do for years. Unfortunately, she added, the 13-year-old watched “Cruel Intentions.”

Blair explained, “I mean, I’ve tried, he’s never watched. But with a girl, he’ll watch ‘Cruel Intentions,’ and I was like, ‘Oh dear.'”

Arthur also mimicked an explicit gesture that her character performed in the movie. “He’s like, ‘Mom, what was that?’ Because my character Cecile does it. It was naughty. It was naughty, is my point.”

Ultimately, she continued, her son liked the film.

The 1999 teen drama also starred Sarah Michelle Gellar, Ryan Phillippe and Reese Witherspoon in a young adult retelling of the 1782 novel “Les Liaisons Dangereuses.” Phillippe played Sebastian Valmont, a New York...