An Assemblyman of Southern California readily resigned Wednesday after a private conversation detailing his extramarital affairs were exposed.

Former Republican Mike Duvall was at an appropriations committee meeting when his comments were picked up on tape.

"I am deeply saddened that my inappropriate comments have become a major distraction for my colleagues in the Assembly, who are working hard on the very serious problems facing our state," Duvall said in a statement on his Web site that had been set up for his 2010 run for the Assembly. "I have come to the conclusion that it would not be fair to my family, my constituents or to my friends on both sides of the aisle to remain in office."

According to CNN, in the video and audio footage Duvall is heard laughing as he described his extramarital affair with a friend's female staffer who is 18 years younger than him. In the conversation he said he like spanking her.

He mentioned another woman to which his colleague referred to as "hot."

"I talked to her yesterday. She goes, so are we finished? No, we're not finished. And I go, but you know about the other one the other one doesn't know about you," Duvall said on the audio portion of the tape.

KCAL-TV confirmed the reports that both women are lobbyists and that one works for a firm.

Duvall was once a member of the Assembly's Utilities and Commerce Committee and the Rules Committee.

San Diego-based Sempra Energy said that it is "investigating this matter and the recent media reports that named one of our employees."

"The employee has denied the speculative media reports," the company said in a statement. "Our investigation will be conducted to ensure not only that our policies on employee conduct are strictly adhered to, but also that our employee is treated fairly."