"Was I in love with Johnny?" The actors behind beloved 1989 teen movie Say Anything and characters Diane Court and Lloyd Dobler shared a romance off-screen, too, but it happened years later, actress Ione Skye writes in her new memoir.

The pair starred together in the hit 1989 film “Say Anything.” Skye writes - almost offhandedly - that years after working together on the project, the two slept together, following her divorce in 2000 from Beastie Boys member Adam “Ad-Rock” Horovitz.

Ione Skye opens up about her past relationships and her complex relationship with her father in her new memoir, "Say Everything."

Ione Skye is coming clean about her sordid love affair that was the “beginning of the end” of her marriage to Beastie Boys rapper Adam Horovitz, aka Ad-Rock.

The two main actors in the beloved 1989 teen romcom Say Anything, Ione Skye and John Cusack, reportedly slept with each other years after they made the movie. Skye and Cusack played polar opposites who fall in love with each other in Cameron Crowe ’s 1989 film, which has gone on to become a cult classic.

Ione Skye shared she was intimate with ‘Say Anything’ costar John Cusack years after the film hit theaters in 1989

The star best known for her roles in ‘Say Anything’ and ‘River’s Edge’ opens up about her complicated life in the memoir ‘Say Everything’

From sleeping with the ultra-famous John Cusack to spending too much time with the “emotionally distant” Matthew Perry, here are four of the biggest revelations about Skye’s tumultuous love life, as shared in her memoir.

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The actress talks to PEOPLE about why she decided to tell her life story — including having an abortion with Anthony Kiedis and why her marriage to Beastie Boy Adam Horowitz fell apart — in her memoir 'Say Everything.