Allred also claims her client has hundreds of text messages, e-mails and photographs to prove the alleged affair with Jesse James -- an affair which she says James initiated.
"He has also indicated to her that he had strong feelings for her," said Allred.
But Allred says her mystery client had no knowledge that James was allegedly involved with at least three other women.
The first woman to go public was tattoo model, Michelle "Bombshell" McGee, who claims she dated James for 11 months. Then Michelle Smith, a tattooed stripper, surfaced. She claims James contacted her on My Space more than two years ago. And L.A. photographer, Brigitte Daguerre, who claims she had a "short lived" affair with the West Coast Choppers bad boy.
Allred says her client's three year relationship with James ended right after the infidelity scandal broke.
When asked what her client's reaction was when she found out about the other women, Allred said, "I have no comment on that at this time."
Allred says her client is still deciding about coming forward, and she would only reveal a few details about the woman.
James issued an apology following published reports that he had an affair with McGee while Bullock was shooting "The Blind Side," for which she won a best actress Academy Award. James has not publicly acknowledged an affair.