The 46-year-old singer and The Voice coach filed for divorce from the 50-year-old Bush frontman in August. A recent report said he had been cheating on her with Mindy Mann, who worked as a nanny for their three boys. She and the estranged pair have not commented about the allegations.
A source told E! News on Thursday that on Feb. 9, a day after she attended the 2015 Grammy Awards by herself, "Gwen's suspicions were confirmed."
"One of the other nannies went to get the iPad for one of the boys and found texts and photos that Mindy had sent to Gavin," the source said. "Gavin's texts were linked to the iPad and could be seen. They talked about meeting up to have sex and she sent naked photos."