Democratic Congresswoman Katie Hill quit Sunday, days after DailyMail.com revealed she was part of a ‘throuple’ with her husband and a campaign worker and an ethics probe was launched into her alleged affair with another aide.

The 32-year-old Representative announced her resignation on Twitter over fears of 'what might come next' following the leak of nude photos of the lawmaker from her alleged relationship with a junior staffer.

'It is with a broken heart that today I announce my resignation from Congress,' she wrote.

'This is the hardest thing I have ever had to do, but I believe it is the best thing for my constituents, my community, and our country.'

She attached a long statement to her tweet, in which she explained: 'This is what needs to happen so that the good people who supported me will no longer be subjected to the pain inflicted by my abusive husband and the brutality of hateful political operatives who seem to happily provide a platform to a monster who is driving a smear campaign built around cyber exploitation.'

California Congresswoman Katie Hill is under investigation by the House Ethics Committee for allegedly having an affair with her campaign finance director Graham Kelly (left), which she has denied. She's also had a throuple affair with her husband and 24-year-old staffer Morgan Desjardins (right) that fizzled out just last month

Katie Hill pictured with her staffer Morgan Desjardins (center) and her husband Kenny Heslep (right)

Hill, 32, (left) gave her campaign finance director Graham Kelly, 31 (right) a $5,100 bonus on April 27, which was the highest bonus given out to her staffers

The married congresswoman is under investigation by the House Ethics Committee for allegedly having an affair with her campaign finance director Graham Kelly, which she has vehemently denied.

She's also had a throuple affair with her husband Kenny Heslep and 24-year-old female campaign worker Morgan Desjardins, which fizzled out just last month.

News of Hill's relationship with Desjardins, from Santa Clarita, California, and shocking photos including one of her posing naked while smoking a bong were exclusively revealed by DailyMail.com earlier this week.

Another photo shows her naked combing Desjardins' hair.

Speaker Nancy Pelosi said in a statement Sunday: 'Congresswoman Katie Hill came to Congress with a powerful commitment to her community and a bright vision for the future, and has made a great contribution as a leader of the Freshman Class.

'She has acknowledged errors in judgment that made her continued service as a Member untenable. We must ensure a climate of integrity and dignity in the Congress, and in all workplaces.'

The news of her resignation follows news earlier Sunday that she gave Kelly a hefty $5,000 bonus, which was also the highest handout given to her campaign aides.

Kelly, 31, received a $5,100 bonus on April 27 as a '2018 election bonus' while he served as the legislative director in Kelly's DC office, according to Federal Election Commission records.

Kelly was one of only four campaign workers who received bonuses, but received the highest. The other received bonuses starting at $2,700, according to the New York Post.

Kelly helped raise more than $8million for Hill's 2018 campaigns. He was first hired in May 2017 and went on to work on the general-election campaign.

The 32-year-old Democratic Representative announced her resignation on Twitter, writing: 'It is with a broken heart that today I announce my resignation from Congress'

Hill has denied having an affair with Kelly. Hill's estranged husband Kenny Heslep alleged they were romantically involved in a social media post shared last summer when he filed for divorce in LA Superior Court.

In Heslep's description of Hill's affair with Graham, he said she had been 'sleeping with her [male] finance director for the past year at least.'

Hill was embroiled in scandal last week when her affairs were revealed. She admitted on Wednesday to the throuple affair with Morgan Desjardins, calling it 'inappropriate' and issuing an apology to her constituents.

In that apology she said that she became involved with the female staffer 'during the final tumultuous years of my abusive marriage'.

Katie Hill, 32, has been seen in a series of shocking photographs obtained exclusively by DailyMail.com. One of the most scandalous photographs, shows a naked Hill holding a giant bong filled with a murky brown liquid, taken on September 11, 2017. On her bikini line is a tattoo of a Nazi-era Iron Cross

Desjardins began a relationship with Hill and Heslep shortly after she started working for Hill in 2017, before the three-way affair broke down this summer. Hill was seen naked brushing Desjardins' hair. The picture was taken during a holiday to Fairbanks, Alaska the three took together, according to a source close to the throuple

'I know that even a consensual relationship with a subordinate is inappropriate, but I still allowed it to happen despite my better judgement. For that I apologize.'

Hill paid Desjardins more than $14,000 as a campaign consultant since April. That sum was in addition to more than $50,000 Desjardins earned after she started working for Hill in 2017, according to federal records.

Desjardins began a relationship with Hill and Hill's husband Kenny Heslep shortly after she started working for Hill in 2017, before the three-way affair broke down this summer when Hill told both her husband and her lover that she wanted to focus on her work.

Hill said her estranged husband was slandering her by coming forward with the affair allegations saying: 'The fact is I am going through a divorce from an abusive husband who seems determined to try to humiliate me.'

Hill has vehemently denied having an affair with Kelly. Hill's estranged husband Kenny Heslep alleged they were romantically involved in a social media post shared last summer when he filed for divorce in LA Superior Court. Hill and Kelly pictured together above in November 2018