Kevin Federline Detailed His First Hookup With Britney Spears

Source: MEGAKevin Federline looked back at his marriage to Britney Spears in his memoir.

Kevin Federline has no problem spilling all the secrets he has been holding onto in his memoir, You Thought You Knew.

In his first-ever tome, out on October 21, Federline has chronicled every aspect of his relationship with Britney Spears - including the steamy details of their first encounter.

According to the 47-year-old DJ, he had no idea who the "Toxic" singer was until they crossed paths at the Hollywood nightclub Joseph's in April 2004."We talked for a little while and then hit the dance floor," he wrote in his book. "Nothing too wild, just a little playful back and forth. Honestly, at the time, in my 25-year-old mind, I was just thinking about smashing that."After their first meeting, they went to the Beverly Hills Hotel, where they reportedly spent time together by the hot tub while their friends hung out in the pool. A few moments later, Spears allegedly grabbed his arm and led him into her private bungalow."As soon as we got into the bungalow, Britney turned around, slipped off her underwear and started kissing me, tearing at my clothes with both hands," Federline recalled. "We stumbled toward the bed while I struggled to kick my pants off my ankles."He added, "What happened between us that night was purely physical. It felt like we were feeding off each other's energy, caught in this whirlwind of chemistry and connection. Very passionate, very intense."

Kevin Federline Left His Pregnant Fiancée for Britney Spears

Source: MEGAKevin Federline was engaged to Shar Jackson when he met Britney Spears.

Federline was engaged to Shar Jackson, who was pregnant with their second baby at the time, when he had an intimate first encounter with Spears.

After paparazzi sensed something was brewing between them during a beach outing, he called his pregnant fiancée and told her "about Britney, about the connection [they] had, and how [he] couldn't ignore it.""I could hear the heartbreak in her voice, and the pain it caused. She was angry. But under the anger was something deeper, a sadness I couldn't undo," he reminisced, noting he should have told Jackson how unhappy he was in their relationship.

Federline shared in his memoir, "I let things unravel instead of facing them head-on. I told myself the distance would make things easier, but it just delayed the inevitable. By the time we spoke, it was too late. I had already let her piece together the truth on her own. The photos of Britney and me on the beach helped."

Britney Spears Allegedly Had a Sexual Encounter With a Female Dancer

Source: MEGAThe encounter allegedly happened during the European leg of Britney Spears' 2004 Onyx Tour.

The "...

Baby One More Time" songstress was in the middle of the European leg of her 2004 Onyx Tour when Federline caught her on bed with a female dancer."Britney stood between her legs, hands on her face, and they were f------ going at it. Full-on making out," Federline, who admitted to "already catching real feelings" for Spears at the time, wrote in his memoir. "It was one of those moments that hits you so fast, your brain can't even begin to process it."After seeing the scene, he walked out of the room to book a flight back home. However, Spears "started apologizing" and told him she had no idea how serious Federline was about their romance.

According to the dancer, Spears was "overwhelmed" and admitted it "had been a mistake.""It was our first fight, or whatever you want to call it. I think it was the moment she realized I wasn't there for the fame or the perks. I was only there for her," he continued.

Kevin Federline Revealed How He Proposed to Britney Spears

Source: MEGAKevin Federline and Britney Spears got married in September 2004.

Federline and Spears tied the knot less than three months after they began dating.

In You Thought You Knew, the You Got Served star recalled how they talked about getting engaged while they were returning to the U.S. following the European leg of Spears' tour."There we were, sitting in first class, sipping cocktails, talking about life, and then - bam - she was casually, or maybe not so casually, proposing to me," he wrote. "I kind of laughed it off, played it cool, and told her no."They did not bring up the topic again until she suffered a knee injury in June 2004.

Federline said, "I thought about what she'd said on the plane. I kept replaying it in my head, wondering if I'd made a mistake brushing it off. By the time she was well enough to think about flying again, I finally worked up the nerve to ask her the question she'd asked me weeks earlier."

Britney Spears Addressed 'Unfinished Business' With Justin Timberlake Before Her Wedding to Kevin FederlineSource: MEGABritney Spears and Ju