The split comes just a month after Angel, 39, denied a relationship with Diaz, 34, in spite of the pair being spotted out on the town in Las Vegas.
A legal rep for estranged wife Joanne Sarantakos, who is said to have hired a private investigator to track Angel's activities, says, "We're naming Cameron Diaz as his lover. We will subpoena her as soon as she comes back to New York."
It is also claimed that Sarantakos, 37, was made to keep her five-year marriage to the magic man a secret in order to boost his appeal to female fans.
Angel, who shot to fame on the Broadway sensation Mindfreak, has just signed a $200 million casino show contract in Las Vegas.
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