A fan's dream weekend with Backstreet Boys star Nick Carter turned into a nightmare after she claimed he sexually assaulted her. Breaking Celebrity News can exclusively reveal the woman's disturbing testimony from the alleged 2006 incident.

In a bombshell case file obtained from the Key West Police Department, the woman gave a detailed account of the alleged incident to an investigator.

The woman, then 20, claimed her cousin was an acquaintance of Carter, 37. Carter allegedly offered to fly them to Key West, Florida from Saturday, March 26, 2006 to Monday, March 28, 2006.

READ THE SHOCKING POLICE FILE! 

The woman explained that a friend of Carter's picked them up at the airport. After they dropped their luggage off at the friend's home, they met Carter and his friend Rob Kalouch at a Denny's restaurant.

She claimed Carter, "started talking to us about how sometimes he may send girls down, that it's not the right girls, and that they're scared that's how it's gonna be for us. Like, we were gonna be ugly and fat and stuff. But when we came they said that they knew that it was us and were happy."

The two women then accompanied the men and a real estate agent to look at houses for Carter before going out to dinner.

"Rob, Nick's friend, he would keep putting his arm around me or something like that," she said. "I just wanted to be nice and I didn't want to, like, put him off or anything like that. But I would, like, try to move."

When the woman told the men that she had a boyfriend back home in Wisconsin they "seemed upset."

When they returned to Carter's friend's house, the woman claimed Kalouch brought her into the bathroom.

"He pulled me into the bathroom and Nick came in," she explained. "They were trying to take my top off. I had a tube top on. Um, and they did get it off, and they were touching my chest. And so I was just trying to get my clothes back. I did get them back and I put them back on."

When Carter left, Kalouch "put" her on the floor on her knees.

"He didn't, like, throw me on the floor or anything, but he put me on the floor and he said, 'We have to do this.' And he already had his – his d**k – his d**k out."

The woman explained that she performed oral sex for "maybe a minute."

"I started crying," she said. "Then Nick came him. And he had his d**k out already, too, and they put my – they moved my head to Nick's d**k and then Nick asked why I was crying. He yelled at Rob and said that, 'You always do this. You always make the girls cry.' He's like, 'You can't do that.'"