– Christie Brinkley's marriage to Peter Cook ended in 2008 after he had an affair with an 18-year-old; he went on to wed Suzanne Shaw. Shaw stood by Cook's side during the 2012 Cook-Brinkley court battle over child support, and things got ugly: At one point Brinkley told Shaw in a court hallway, "When you find out he's been cheating on you, I'll be here for you." Shaw responded, "Come up with a new line"; Shaw also said that her own marriage to Cook had been marred by Brinkley's "black cloud of hate." Only, um, Shaw and Cook filed for divorce this year ... after Cook allegedly cheated on Shaw. Now Shaw has apologized to Brinkley for bad-mouthing her years ago, Page Six reports. "Christie and I have talked recently and I have privately apologized to her, but, given the public nature of their divorce and custody battle, I feel a public apology is also appropriate and deserved," reads a letter from Shaw obtained by the New York Post. "Christie was wrongly vilified as being an embittered ex-wife. I now believe she had every right to do what she did by taking a public stand," Shaw writes. "Unfortunately, I fell under Peter's spell, but now that the reality of who he is has been revealed, I regret my involvement." Click for more on the latest cheating allegations against Cook.