Julie Swetnick — the third woman to accuse Brett Kavanaugh of sexual misconduct — backed away from some of her accusations against the Supreme Court hopeful in a new interview, as her ex-boyfriend claimed she threatened to “kill” him.

The 55-year-old broke her silence since filing her sworn statement last week that accused Kavanaugh and his pal Mark Judge of “spiking” the punch at parties and lining up outside rooms where girls were being “gang raped.”

But now, Swetnick recalled seeing the two friends merely hovering around the area where there were alcoholic drinks.

“I saw him [Kavanaugh] giving red Solo cups to quite a few girls during that time frame,” she told NBC News on Monday night. “I would not take one of those glasses from Mark Kavanaugh — Brett Kavanaugh, excuse me.”

She added, “I saw him around the punch … I don’t know what he did, but I saw him by them, yes.”

In her declaration, Swetnick was more definitive about Kavanaugh’s alleged conduct at the parties.

“I became aware of efforts by Mark Judge, Brett Kavanaugh and others to ‘spike’ the ‘punch’ at house parties I attended,” she wrote.

Swetnick, however, doubled down on her claims of Kavanaugh’s boorish behavior at the house parties she said they attended together in Montgomery County, Maryland, in the early 1980s.

“He was very aggressive, very sloppy drunk, very mean drunk. I saw him go up to girls and paw on them, try to, you know, get a little too handsy, touching them in private parts. I saw him try to shift clothing,” she recalled.

“I saw him push girls against walls. He would pretend to stumble and stumble into them and knock them into a wall. He’d push his body against theirs, he’d grope them.”

NBC said it reached out to four friends who Swetnick said were familiar with the parties. One told the network they didn’t remember Swetnick, one is dead and two didn’t return requests for comment.

The Washington, DC, resident, who holds active security clearances through her work with the government, detailed her own sexual assault at one of the parties, where she said boys would line up outside rooms to “gang rape” girls.

“I was at a party and I remember I started not to feel very well. Next thing I know, I was shoved into a room and I’m having my clothes torn in different directions,” recalled Swetnick, who was 19 at the time. “I was touched everywhere. I was physically assaulted in every way you could physically assault a woman. It was horrible. I had no way to fend them off.”

She didn’t directly accuse Kavanaugh or Judge of assaulting her — but did place them at the same party where she was violated.

“I cannot specifically say that he [Kavanaugh] was one of the ones who assaulted me,” she said. “But before this happened to me at that party, I saw Brett Kavanaugh there. I saw Mark Judge there and they were hanging about the area where I started to feel disoriented, where the room was and where the other boys were hanging out and laughing.”

Swetnick said immediately after the assault, she told her mother and went to the Montgomery County Police Department.

The department told NBC that old records could take up to a month to produce — but confirmed that one of the officers Swetnick said she talked to worked there at the time. That cop and her mother are both deceased.

Meanwhile, Swetnick’s ex, Richard Vinneccy, appeared on Fox News on Monday night to dish about their rocky relationship.

“Right after I broke up with her, she basically called me many times and at one point, she basically said, you will never, ever see your unborn child alive and I’m just going to go over there and kill you guys,” he claimed.

Vinneccy and Swetnick were in an on-again, off-again relationship from 1994 to 2001.

He said she never mentioned she was assaulted as a teen.

“Never,” he said. “We used to talk about everything and she never once mentioned that at all.”

Vinneccy also claimed Swetnick used to beg him to hit her.

“Every time we would get into fights, she would get in my face and she would ask me to hit her,” he recalled. “She would say, ‘Hit me, Richard, hit me.'”

Vinneccy sought a restraining order against Swetnick in March 2001 — but didn’t appear in court, so one was never issued.

“I didn’t want to provoke her,” he explained about not following up. “I knew the type of person Julie is and I was afraid, to be honest with you.”

He added about her claims against Kavanaugh, “If you ask me personally if I believe her, I don’t believe her. I really don’t believe her. No one knows Julie Swetnick better than me.”

In testimony before the Senate Judiciary Committee last week, Kavanaugh called Swetnick’s allegations a “joke” and a “farce” and said he didn’t even know who she was.

“You know what I say to that? He’s a liar,” Swetnick responded in the NBC interview.

Judge, a self-admitted alcoholic who’s written about blacking out in high school, has also denied her allegations, saying he would remember “actions so outlandish.”

Swetnick countered, “He’s an admitted blackout drunk and drug addict. How could you know what you’ve forgotten if you blacked out?”