High-profile AFL player manager Ricky Nixon has admitted to "inappropriate dealings" with the teenage girl at the centre of the St Kilda naked pictures controversy.

Nixon, 47, has told the Herald Sun that he visited the 17-year-old girl in her hotel room in the city last Sunday night and on Valentine's Day and took alcohol.

However, he has denied that he had had sex with the teen after claims by her that they had an affair.

Meanwhile, she has left several messages on her Twitter page since the controversy broke.

"This is it. It is now officially over. Ultimate pay back. Thanks HS."

She has also said that she has photos and videos that she took.

Nixon claimed he went to her hotel after receiving phone calls from her and says he has seen her at least three times.

"In hindsight my dealings with this girl were inappropriate and I regret them," he told the Herald Sun.

"I won't be seeing her again."

The paper says it saw Nixon leaving the girl's hotel on Tuesday at about 7.15am.

In another development, Nixon, who manages the career of Saints' skipper Nick Reiwoldt whose naked picture was put online by the girl, went to the police station on Thursday night to report an alleged theft.

- AAP