"I think he made the right decision for himself and for his family," House Speaker John Boehner told reporters.
But, reports CBS News correspondent Whit Johnson, Boehner refused to address rumors he warned Lee to stop partying with female lobbyists.
It turns out the woman at the center of the sex scandal surrounding Lee, an upstate New York Republican, is Yesha Callahan, a single, 34-year-old African-American designer, according to the Washington Post.
In an interview with a blogger on a website called TheLoop21.com, the woman, whom the site didn't name, spoke out about why she decided to post on Craigslist.
"I thought it would be fun to see what type of men would send me their photos … because dating in D.C. sucks," she's quoted as saying.
Thirty men responded, among them the second-term congressman, with a now infamous shirtless photo.
Though Lee told her he was a lobbyist, when she realized he was in Congress, she told TheLoop21, her "first reaction was holy -- -. Second was, he's probably done this before. Third was, he's married. Fourth was, oh my god he's 46-years-old."
She said she doesn't feel badly about what happened to Lee. "Chances are," she remarked to the website, "he's probably met more women online and, you know, cheaters eventually get caught. He didn't have to resign. He made that choice himself," she told TheLoop21.
She added she thinks Lee quit because he's hiding bigger things, telling the website there's "probably a bigger picture. E-mails were exchanged. Something bigger is going on in his background. You never get caught the first time."
Callahan waited three weeks before sharing her discovery with Gawker.com, effectively ending Lee's career.
"How dumb is he to let himself be in this position?" one resident of his district asked.
Workers have already removed Lee's name from his Buffalo-area office.
He hasn't been seen in public since last Wednesday.