Patrick Meehan, a 62-year-old Republican from Pennsylvania, has claimed that it was his much-younger aide who prompted his intimate communications with the woman, according to the New York Times.
"That I would find later that that was not something that she was comfortable with, really hurts me. This was a person who specifically invited communication with me so that she would be able to have the ability to be there for me," the newspaper quoted Meehan as saying.
His remarks came shortly after the US House Ethics Committee began an investigation into Meehan allegedly misusing official resources from his congressional office to settle the woman's sexual harassment complaint.
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The New York Times cited sources familiar with the case as saying that the aide left Meehan's office to file the complaint, in which she alleged that Meehan "became hostile after she rebuffed his romantic overtures."
Earlier, Meehan vehemently rejected all the accusations, saying that he didn't do anything wrong.
Twitter users were quick to react to the scandal, with some calling for the immediate resignation of Meehan.
Others commented sarcastically about Meehan blaming his aide for their connection.
The Meehan aide's complaint comes amid the alleged sexual harassment scandals involving world-famous celebrities, including Harvey Weinstein and Kevin Spacey, as well as politicians in the US and several European countries.
In December 2017, Al Franken stepped down from his post as the Democratic Senator from Minnesota due to a spate of sexual misconduct accusations against him.