Say Anything star Ione Skye cheated on ex-husband Adam Horovitz with a woman and he caught her

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.In her new book, “Say Everything: A Memoir,” out now, the actress, 54, who made a name for herself in the 1980s with the thriller “River’s Edge” and Cameron Crowe’s beloved teen romance “Say Anything,” confessed that her hip-hop star now-ex-husband once caught her and another woman canoodling in their swimming pool — a moment she said made her feel as if she’d “just witnessed a car crash.”Describing herself as a serial cheater during her seven-year marriage to Horovitz, Skye detailed how she had several flings with females — but one affair with a woman named Mai Lei changed everything.“I couldn’t stop watching her on the dance floor,” she writes of her first impression of Lei, noting that she had a “rambunctious energy” and “a very fit body.”“Within minutes, I could tell we’d get together and it would be different with her,” she writes.While a previous female lover “felt dangerous and unreal” to her, “Mai Lei felt solid and down-to-earth.” Skye calls their time together “the true beginning of the end of my marriage.”“Within days of meeting, Mai Lei and I felt like a real couple,” she recalls.“If you’ve never cheated, I admire you, but I really don’t expect you to understand why I would do what I was doing to the love of my life.I still don’t truly understand it myself.”The affair blossomed while Horovitz was on tour, though the actress admitted she was no less faithful to Lei than her husband.

“I wasn’t loyal to her (there were other girls too),” she writes.“I loved her, thought her smile lit up the world.

From the inside, I liked the life-within-a-life I had with her.“The relationship felt so easy and natural,” Skye continues but confesses that she “started getting sloppy” and bringing Lei over to the house she shared ...