More bombshell revelations are rolling out from Britney Spears upcoming memoir.

Just days after fans were surprised to learn the pop star had an abortion when she was dating Justin Timberlake, The Sun reported the book also addresses a longtime rumor that she was unfaithful during her relationship with the singer.

In The Woman in Me, Spears reportedly confesses to cheating on Timberlake with dancer and choreographer Wade Robson.

She said she cheated on Timberlake after finding out that he had slept around behind her back.

We were out one night and we went to a Spanish bar. We danced and danced. I made out with him that night, she shared of her brief fling with Robson, who later famously accused Michael Jackson of sexually abusing him as a child in an HBO documentary.

The Toxic crooner said that Timberlake subsequently agreed to move past her cheating, adding that she was loyal to Justin for years with that one exception.

Spears went on to claim in the book that Timberlake was also unfaithful during their three-year long relationship.

She wrote that the Grammy winner cheated on her with another celebrity, but refused to spill the womans name because she is now married with children.