Brinkley Divorce Trial Resumes With More Sexcapades

On Monday, Brinkley went from a sunny smile as she entered the Long Island courthouse to sobs while on the witness stand explaining the collapse of her marriage.

(Getty/ABC News)

"I was devastated, and I was in this emotional tug of war where I was discovering more and more every day. ... It was a nightmare," Brinkley said through tears. "I had to deal with his Internet porn life. Anyone who would chase a teenager, a young girl, I mean, where is his judgment?"

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She went on to recount how she attempted to explain the situation to the couple's two young children, whose custody could be determined by the hearing.

"I told them, 'I think Daddy has fallen out of love with me. When that happens, people move apart, but that doesn't mean Mommy and Daddy don't love you,'" Brinkley said.

Cook has been linked to three different women since separating with Brinkley, while the supermodel says that she has not gone on a single date.

"I haven't even thought about dating or anything like that. I've been completely focused getting the kids over this painful event," she said.