Missouri House Speaker John Diehl is looking to repair his reputation and retain his position while seeking forgiveness from the public for what he describes as “the poor judgment” he displayed in a relationship with a Capitol intern.

Diehl, a Republican, apologized Wednesday for his actions following a newspaper report detailing sexually-charged text messages with a college student who had been serving as a legislative intern. Diehl also said he would not resign and appealed to colleagues for their continued support as Democratic lawmakers launched an effort to try to remove from the speakership, which he was elected to in January.

The Capitol drama was unfolding as Missouri lawmakers pressed toward a Friday deadline to pass legislation, with tensions already high because of political conflicts.

"I apologize for the poor judgment I displayed that put me and those closest to me in this situation," Diehl said in a written statement released Wednesday after he shut himself for hours in his Capitol office, meeting privately with various staff and lawmakers. "I also regret that the woman has been dragged into this situation."

Earlier Wednesday, The Kansas City Star published a story accompanied by screenshots of apparent electronic messages between Diehl and a college student who was a Capitol intern. The messages included sexually suggestive discussions and reportedly a “flirty rapport” suggesting an intimate relationship between the two.

Diehl did not specifically mention the text messages in his written statement or in comments to reports outside his office late Wednesday. However, he did express remorse for his actions.

"I apologized to my caucus and to people in my life that are important to me. It was very regrettable. It was a stupid thing to do. And I'm sorry," he said, adding that he intends to remain in the speaker post.

The intern, who no longer works at the Capitol, declined to comment Wednesday.

She "is not interested in being at the center of any political debate concerning her internship or the workings of the state Capitol," her attorney and former Democratic state House member Phil Willoughby told the AP.

Richard Miller, dean of the School of Arts and Sciences at Missouri Southern State University, told The Star that the school pulled its four interns out of the state Capitol this spring after an unspecified incident, which he declined to describe more specifically.

Following the Star's report, Democratic state Rep. Gina Mitten announced on the House floor that she was seeking signatures on a petition calling for a vote to remove Diehl as speaker pending a full investigation into allegations of misconduct.

"I do not believe that our present speaker should be at the dais while we have this dark cloud over the Capitol," said Mitten, of the St. Louis suburb of Richmond Heights.

Six of the House’s top Democrats released a statement Wednesday evening calling upon Diehl to “resign the post of House speaker without further delay.”

Missouri Democratic Gov. Jay Nixon described Diehl’s conduct toward the intern as “clearly inappropriate and troubling.”

But others continued to back Diehl's leadership.

A large group of House Republicans met for about an hour Wednesday night. Republican St. Louis Rep. Marsha Haefner said as she left the meeting that she supports Diehl "100 percent."

Rep. Scott Fitzpatrick, R-Shell Knob, also voiced support for Diehl.

"He's owned up to what's happened and apologized and asked for forgiveness," Fitzpatrick said. "I'm a forgiving person."

Diehl, 49, is an attorney who lives with his wife and three sons in the St. Louis suburb of Town and Country. He was first elected to the House in 2008 and now presides over one of the largest Republican legislative majorities in state history. He's known for his ability to work deals and to persuade rank-and-file members to stick together on the party's priorities.

The Star reported that it contacted Diehl on April 24 seeking comment about the text messages. The newspaper said Diehl backed out of an interview a week later and that his staff eventually turned over records showing six text messages sent from the intern to Diehl. The newspaper said the records showed only a log of conventional text messages, but it reported that the messages it obtained show conversations over Apple's iMessage platform.

The Associated Press contributed to this report