BIKINI model Tina Wallmann was shocked and upset after a conversation she thought was private ended up being aired on radio by one-time Big Brother presenter Mike Goldman.

The Ralph covergirl, rarely seen with much on, hit headlines last week after Gorilla Radio host Goldman called from the studio and questioned her about her relationship with media scion Ryan Stokes.

“I’m not with him any more – I went on a couple of dates with (Justin) Hemmes and I sort of preferred Ryan, but things didn’t work out . . . because of the media and everything,” she told him.

The medical receptionist said she had no idea the chat would be broadcast and is “extremely embarrassed and upset”.

“I’ve been chased for months by media and offered tens of thousands of dollars to talk about my private life and have always refused,” she said.

“I thought I was having a private conversation.”

Goldman yesterday said Wallman would have been aware she was on the radio.

“Why else would I call her at 7am? It was me and Troy Thompson and we said we were on the air,” he said.