Indiana State Rep. Phillip Hinkle has denied he's gay and won't resign amid allegation he proposed sex to an 18-year-old male.

Hinkle's accuser Kameryn Gibson told The Indianapolis Star two weeks ago that the 64-year-old lawmaker exposed himself in a downtown Indianapolis hotel room where the pair had agreed to meet.

Hinkle is the co-author of a bill that created the state's “In God We Trust” license plate and earlier this year he voted in favor of an amendment that would constitutionally ban the state from recognizing with either marriage or civil unions the relationships of gay and lesbian couples.

Gibson told the paper that Hinkle responded to his ad looking for a “sugga daddy” and offered him $80 plus a “healthy” tip for “a really good time.” He added that he met the lawmaker, but decided against going further after he learned Hinkle was a state representative.

In an interview with Indianapolis NBC affiliate WTHR, Gibson said Hinkle grabbed his ass.

“When I wanted to leave, he was like … 'cause I said my sister is coming to get me. He was like you're not leaving until we do what we planned to do. And I didn't want to have sex with him,” Gibson said.

“He was just like well you're not going anywhere,” he added. “He grabbed my arm and he grabbed my shirt and then he went sexual with it by touching my butt.”

“And he exposed himself?” the interviewer asked.

“Yes, he did,” Gibson replied. (The video is embedded in the right panel of this page.)

Hinkle doesn't deny that he offered Gibson $80 to meet him, but insists he's not gay, did not expose himself, and neither he nor his wife offered money to keep Gibson and his sister quiet.

But when the Star asked if he had previously arranged similar meetings, he answered: “We're not going there.”

“I want to know what upstairs in my brain went off that sent me down a road of self-destruction,” he said. “Somewhere upstairs a button got pushed, and I want to know why. People keep asking: 'What were you thinking?' I honestly don't know. It's as simple as that.”

On Tuesday, House Speaker Brian Bosma, a fellow Republican, called on Hinkle to resign, saying his personal life “is a distraction” from legislative priorities.

The beleaguered lawmaker responded in a statement that he's staying put, at least until next year: “As for 2012, we, as a family, decided back in December, after the 2010 election, that I would not be seeking another term.”