When Christie Brinkley's ex-husband Peter Cook was reported to be romancing yet another younger woman, few were surprised.

Cook, 59 - once described as having a 'secret pathological predilection' for young women - was said to have flown Kasey Dexter, 36, to his home in the Hamptons for a five-day love-in, according to Page Six.

But seemingly embarrassed by the suggestion he was up to his old tricks, the wealthy architect had his rep pour cold water on the claims, denying the 'encounter' ever happened.

Now DailyMail.com has seen a series of steamy photos proving the wealthy architect did in fact entertain Dexter at his home earlier this month.

In one eye-popping snap Cook is seen cheekily cupping the exposed breast of his young lover while they pose up together in his master bedroom.

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Cook also took a photo of Dexter completely naked sitting on the end of his bed watching what looks to be a classic movie on the TV.

In other snaps Dexter - Mario Singer's former mistress - is seen kissing the gray-haired architect's face and the pair also pose for a number of selfies together, one in the garden of his pristine Hamptons home.

In some shots Cook is seen wearing a white t-shirt with the words Sag Harbor written across it - the name of the town where his $2.2million waterfront property sits.

The three-bedroom home boasts its own dock, wraparound deck and beautiful grounds.

DailyMail.com has reached out to Cook for comment.

A close friend of Dexter said the pair made the most of the cozy property during the 'sex-filled' trip.

The friend, Ali Moore, has also told DailyMail.com that while Dexter enjoyed her time with Cook, she is less than happy at his 'ridiculous' claim they never got together.

She says his denial was 'hurtful' to Dexter and she may call time on the relationship.

Moore also confirmed details of the trip, saying she spoke with Dexter at length when she got back to Florida.

'Peter and Kasey had been texting each other for days and then he invited her to come visit him in the Hamptons,' Moore explained.

'Kasey loved the idea because she kind of liked him and it seemed like fun.

This is Cook's $2.2million waterfront property where the two spent five days together

'Peter flew her to LaGuardia (airport) on Thursday and she spent the first night at a friend's house in East Hampton then on Friday Peter came and met her at The American Hotel.

'When Peter arrived, Kasey immediately thought he was hot. He obviously felt the same because she had sent him a lot of sexy pictures so there was definitely chemistry.'

Moore says that when they went back to Cook's house all he wanted to do was 'have sex'.

'She said he wasn't a bad guy like she had heard, in fact she really liked him,' she said.

'He took her for manicures and pedicures and they went to the movie 'I Feel Pretty' with Amy Schumer. They actually had fun together, so it was really hurtful to her when he denied they even were together.

'They really got to know each other. Every night they watched old classic movies and he made her latte's in the morning and brought them to bed.

'It seems ridiculous that he would deny it. It's wrong for him to be embarrassed since he flew her there and she is beautiful and they spent so many days together.'

Cook, who was married to supermodel Christie Brinkley for 12 years, is said to have a 'secret pathological predilection' for younger women. The two famously split after he was caught having an affair with an 18-year-old girl

Dexter, 36, is the former mistress of Mario Singer, the ex-husband of Real Housewife Ramona Singer (right). The two ended their relationship earlier this year

Moore claims Cook even bought Dexter a new cell phone, on which many of the photos obtained by DailyMail.com were taken.

'That's another reason why he can't deny they had an 'encounter' as he referred to it,' said Moore.

'It seems like Peter still wants to be with her because he keeps texting her.

'But she might be done with him because he is acting ridiculous about their relationship being public. He has even asked her to talk to his publicist. She has no interest.'

Moore says Dexter told her that Cook said he was falling in love with her.

'Peter told Kasey: "I'm falling for you. You are so beautiful, even with no make-up." After their time, at the airport he expressed that he wanted her to come back and visit and begged her not to see any other "young men."

'He also was concerned she only came to visit him to make Mario jealous, so he asked her not to go back to Mario.'

Cook famously split with supermodel Christie Brinkley in 2008 after cheating on her with Diana Bianchi who he had hired to work at his architecture firm as an assistant at age 18.

The couple, who were married for six years, then fought a bitter custody battle over their children, Sailor and Jack, as well as a fierce legal fight over money.

Cook's attorney denied any infidelity but Brinkley still emerged the winner, handing him just $2.1million of her estimated $60million fortune.

There were also reports that during the time he was dating Brinkley, whom he married in 1996, Cook was allegedly carrying on a relationship with then 19-year-old, Samantha Cole.