Underwear model Amanda Wyatt says she dated Keith Urban beginning in 2004, but their steamy dalliances in Nashville didn't stop when he began seeing Oscar-winning actress Nicole Kidman and continued even after the pair were engaged.

"Keith is a very good lover; he was a good man all around," she said. "It was one good thing a night. It was very fiery. You could tell we were just into each other and that is what made it good. From April 2005 until they got married in June 2006, we got together a lot of times, but I can't put a figure on it. It was a pretty regular thing."

Wyatt, 23, said Urban continued to bombard her with sexually charged text messages even as things got hotter between him and Kidman.

"He would text me when he wanted to see me. Every now and then, he would call me to see how I was doing," she said. "I would say half the texts he sent me, from the time he was linked to Nicole to the day he got married, were sexual."

"He would write things like, 'You are the last person I have tasted. I miss being inside you. I miss touching you.' It was all sexual."

A spokesman for Kidman and Urban could not be reached for comment.

Wyatt — a Southern lingerie and catalog model — says Urban never divulged to her that he was dating Kidman, even as rumors swirled in the media that the two were linked. And she says she never asked.

"I wanted to be so cool with him. I never wanted to badger him about anything, so I snuck around and asked a few people about it," she said. "Everyone lied to me about it, but it was kind of hinted around but he never confirmed it to me."

Wyatt said Urban — who has recently been undergoing treatment for drug and alcohol addiction — frequently did drugs around her and drank heavily.

"I have seen him take ecstasy and cocaine when he has been with me," she said. "Even when he was doing it, he was very private about taking drugs. He would leave the room to do what he had to do. He would not get messed up and start screaming and yelling."

Wyatt says she has come forward because she doesn't want Kidman to view her as a threat.

"I want this out there for Keith and Nicole to see it, for Keith to see that he was my friend to me and that I care about him and for Nicole to know that I don't want to be a threat to her marriage," she said.

"If he wants to be married to Nicole, he needs to be in it 100 percent or not in it," she said.