Los Angeles, Oct 25 : Pop icon Britney Spears has admitted she was "messed up for a while" post her "painful" abortion after falling pregnant with Justin Timberlake's child. In her tell-all memoir 'The Woman in Me', released on October 24, the 'Toxic' singer reveals the intricacies of her rocky romance with the 'Cry Me A River' singer, including a shock abortion after falling pregnant with his child and that he cheated on her with 'All Saints' star Nicole Appleton and another unnamed celebrity, reports 'Mirror.co.uk'. Staying true to herself, Britney shares that she too cheated during the four-year relationship. She revealed that she slept with Wade Robson "one time" after a night out with the dancer. "We were out one night and we went to a Spanish bar. We danced and danced. I made out with him that night," she wrote before claiming she had been loyal to Justin throughout their relationship, except for that "one exception". As per 'Mirror.co.uk', she said she openly admitted the incident to Justin at the time, but they were able to move on from it. However, later in the chapter and after detailing the horrors of her "painful" abortion, Britney tells readers that she was "messed up for a while" after the procedure but "still did love Justin so much" but ultimately "should have seen the breakup coming". Justin ended things with Britney over text, sending a brutal two-word message to the singer. The message, which came through while Britney was "powering through" a two-day music video shoot, made her to say: "He blew the best thing he ever had." It's said when Justin Timberlake released 'Cry Me A River' in 2002 he cruelly used a lookalike of the pop icon in the infamous video and Britney had a telling reaction. The 'Toxic' hitmaker was stunned by Justin's video, and revealed he spoke to her about it before it was released, but didn't tell her just how scathing the music video would be. /IANS