Peter Cook, Christie Brinkley’s ex-husband, was left by his wife Suzanne Shaw and his infidelity is to blame.

Reports say that Shaw moved out of their home in the Hamptons and has filed for legal separation. “Suzanne stood by Peter for years, through all his battles with Christie, but he lied to her and completely misrepresented himself. She repeatedly caught him cheating,” a source said.

Cook split from Brinkley after he cheated on her with his assistant Diana Bianchi, who was 18 years old at the time. Cook even paid Bianchi $300,000 to keep their relationship a secret, but that failed. Cook and Brinkley were married for six years and fought each other over money and custody of their daughter Sailor.

Christie Brinkley’s humiliating ordeal with Peter Cook

Throughout Cook’s legal battles with Brinkley, Shaw was by his side. In 2012, Brinkley even said to Shaw, “When you find out he’s been cheating on you, I’ll be here for you.” Shaw told Brinkley to “come up with a new line.”

Now, years after, Shaw is in the same situation as Christie was. A source said, “Suzanne faithfully defended Peter against Christie, but now she regrets that she did so.”

Peter Cook hid marriage to Suzanne Shaw from Christie Brinkley

Christie Brinkley Accused Of Spreading Nasty Rumor About Ex Peter Cook: By Radar Staff The drama between Christi… http://t.co/XHmmW6WM

— Sulthan Arkana (@zaynmalik_Paris) October 10, 2012

Cook’s lawyer John J. Fellin denies all the rumors that cheating was the cause of separation. “The separation agreement does not mention, in any way, infidelity by Mr. Cook, and any such allegations to that end are without merit,” he said.

Cook has been seen at the American Hotel in Sag Harbor, NY. He was introducing a blonde girl to people as his girlfriend. Reports say that he also tried to pick up a girl at a Bridgehampton restaurant. A witness said that Cook was not successful in wooing the girl, but later called the restaurant and asked the staff to hand the phone to her. “It all appeared very desperate on his part,” said the witness.

Brinkley’s rep did not respond to a request for a comment on the situation.

Image via YouTube