The mistress of a Queensland MP who was caught with his penis in a wine glass says she "enjoyed the people's money" when they went on official trips together.
Ethics Committee chairman and Liberal National Party MP Peter Dowling was outed on Monday for having an extramarital affair and texting his mistress pornographic photos.
Mr Dowling has also been accused of taking advantage of parliamentary trips to meet his mistress, who has not been named, in locations as diverse as Perth and New Zealand.
His mistress says all those allegations are true.
"I enjoyed the people's money too when I stayed in the hotel rooms," she told Nine Network.
"I enjoyed the perks of the Australian taxpayers because I was in the hotels with him."
She also said they had sex in Mr Dowling's Redlands electorate office, and even in Parliament House, on numerous occasions.
"I would go and visit Parliament House and we'd go to his office," she said.
"And have sex, yes.
"Twice I stayed overnight in Parliament House."
His mistress thought that she had a future with Mr Dowling, but said she now understands the serious consequences of their affair.
Mr Dowling has stood down from the Ethics Committee while the matter is being investigated.
He apologised to staff, the government, his wife of more than 25 years and two children.
"I am sorry for the pain and embarrassment I caused you," he said.
"I am not proud of the events plastered all over today's paper and I cannot and will not defend any part of it."
The clerk of the parliament is investigating if the MP complied with parliamentary expenditure guidelines and will consider if the matter needs to be referred to the ethics committee and the Crime and Misconduct Commission.
Premier Campbell Newman didn't comment on the sexting but assured the house that appropriate action was being taken.
He told parliament he was only made aware of the allegations at 5.30pm on Monday, but past Ethics Committee chief Alex Douglas, a former LNP MP now with the United Australia Party, said he and others in parliament had known about them for some time.
It defied logic the premier did not know, he said.
"The premier has got a huge staff and they trawl all the social networking sites. If they didn't know about this, then they're pretty slow," he said.
