Despite how oblivious Spears may appear to be about her recent behavior, Cohen claims she was aware that she had gone too far lately. He said, "She knew she had been drinking and partying as a way to try to banish the bad stuff from her life. Far from the trashy drunk, I saw a very shy, sweet girl who was just desperately sad about what had happened with her marriage. Yes she enjoyed Jack Daniel's but she was trying not to get in the state she had been in with Paris. Her boys mean everything to her and she worried she might lose them in a custody battle."

Cohen also gave details on his sexual experiences with Spears. He revealed, "She loves sex and is incredibly adventurous. She was totally happy when we were locked in each other's arms. But once the sex stopped Britney was like a little girl lost, unable to cope...She needed me to hold her and tell her what a beautiful girl she is. We would make slow love until the sun came up. She has an amazing body and I loved exploring every inch of it."

Isaac was particularly open about the time he spent in Las Vegas with Britney at the Palms Hotel's Sky Villa. According to New of the World, the Villa has a mirrored ceiling, a rotating bed and a private Jacuzzi. Isaac reminisced about their time there, stating, "Britney is not shy about her body so she slowly stripped off her clothes and beckoned me to join her under the stars in the pool. It was an amazing view over the Las Vegas strip. But we didn't stay long as we wanted to try out the bed. So we clambered on and I grabbed the remote and started it turning round and round. All the time as we made love we watched ourselves in the mirrored ceiling. It was amazing but we did it so many times it made us start to feel sick. We had to turn it off."

Isaac also tells News of the World about Britney's body image insecurity and the reason why she often goes out looking like trash. For the complete story, click here.