Peter Cook, the estranged husband of former supermodel Christie Brinkley, agreed to payoff a former teen lover to keep quiet about their affair.

This story about Brinkley’s 49-year-old ex was broken by People Magazine, and the magazine confirms that Cook agreed to pay Diana Bianchi, who was 18 at the time of the affair, $300,000 to keep the encounters between her and Cook to herself.

The news of the affair became public amid the heated divorce trial between Brinkley and Cook. And although Cook paid Bianchi $300,000 last March, in a deal to keep the details of the affair out of the courtroom, the now 21-year-old Bianchi has been subpoenaed to testify at the divorce trial.

Cook is an architect, and the affair started when Bianchi began working at his office. The details of the divorce trial are being made public at Brinkley’s request. It is also being reported that Brinkley is claiming that Cook was an enthusiast of Internet pornography and often sought out women on adult swinger’s websites while she and Cook were married.