Why Is Nick Carter Holding a Grudge Against Paris Hilton?

Nick Carter once adored Paris Hilton so much that the two indulged in constant PDA on the red carpet and tattooed each other's names on their bodies.

But those days are long gone. The Backstreet Boy and the "Simple Life" star crashed and burned in 2004 after seven months of dating that Carter clearly does not remember fondly.

In his new memoir, "Facing the Music and Living to Tell About It," Carter says his time with the hotel heiress was not exactly well spent, particularly because he was halfway through a 10-year struggle with drugs and alcohol.

"Paris was the worst person in the world for me to hook up with," he tells In Touch Weekly. "[She] fed my worst impulses as far as partying."

Hilton's rep did not respond to a request for comment.

Carter, 33, has spoken about his ex before. He claimed in 2006 that he had cheated on her with Ashlee Simpson, after he found out she was cheating with Chad Michael Murray. (Hilton denied that she had ever strayed.) And there was that time he was quoted talking about her performance in the bedroom. And when he insisted their breakup was actually mutual, not Paris's decision, as she claimed immediately after the split. He and his younger brother Aaron even feuded over Paris on their reality show "House of Carters" after the younger brother took Paris on a date, which Aaron said was strictly to uncover intel about whether she had cheated on Nick.

Perhaps Nick's bitterness is simply because of the way she ended things …

"I was getting my makeup done, and it just hit me: I love Nick, but I need time alone," Hilton told MTV in 2004. "I called my psychic, and I asked her opinion. She thought I should be alone, and I agreed with her."

Isn't that the way you make all your decisions?

Besides the Carter comments, Hilton is also making headlines today for saying that she's never cleaned a toilet and describing her reality show as "timeless."

Right, just like the Carter-Hilton romance!

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