Her marriage went Up in Flames.

Astronomer HR mistress Kristin Cabot and her husband are officially ending their marriage — a decision that those familiar with the wronged partner simply termed “karma,” according to a report.

Cabot, 52, filed a divorce petition from Andrew Cabot less than a month after the Coldplay Kiss-Cam caught her canoodling with her boss.

But the couple’s relationship had already been on the rocks — and Andrew Cabot played it cool when he found out his third wife had already moved on.

“I texted Andrew right after it occurred, and he said: ‘Her life is nothing to do with me,’ and mentioned they were separating,” his ex-wife, Julia Cabot, told The Daily Mail.

“He claims it has nothing to do with him, despite their marriage and shared home. However, the only thing he seems to care about is money,” she added.

“I wouldn’t say he’s husband material,” Julia Cabot revealed.

“But she doesn’t seem like wife material either,” she said of the now-twice-married Kristin Cabot.

Paperwork viewed by the Mail shows that Cabot filed papers to dissolve the marriage at a court in Portsmouth, New Hampshire, on Aug. 13.

The divorce would be the third for Andrew Cabot, the CEO of family company Privateer Rum and who Julia Cabot described as a descendant of a “Boston Brahmin” family — meaning he is a posh member of one of the oldest and wealthiest families in Boston.

And according to Julia Cabot, a 63-year-old yoga teacher, her ex-husband was a jerk who had it coming.

“That’s why after it happened, I got loads of texts from people with that word: karma. It was like: what you give, you get. Personally, I don’t think he’s affected by what happened at all. I don’t think his feelings are hurt. He’s probably embarrassed, if anything,” said Julia Cabot, who was married to Andrew Cabot for four years until they split in 2018.

“He’s a Boston Brahmin, that’s their code: ‘This isn’t anything to do with me.’ His ego is too big to be affected by this and the only thing that he’s bummed about is that he was embarrassed,” she continued.

“He’s not a nice person. Now something not nice happened to him.”

Other sources, however, raised suspicions that the Cabots are only pretending the marriage was fizzling out to save face after the wildly viral scandal.

Andrew Cabot had been on a business trip to Japan during the kiss-cam debacle and was blissfully unaware that his wife was publicly canoodling with Astronomer CEO Andy Byron until he came home.

“The family is now saying they have been having marriage troubles for several months and were discussing separating, which I find interesting since, as of a month ago, they were saying how in love they are,” the source told the Mail.

How the Cabots’ divorce will shake out is yet to be seen — but if Julia Cabot’s divorce from the Rum mogul is any indication, it could turn ugly.

Her marriage termination to Andrew Cabot lasted two years, with Andrew Cabot saying in court documents that it was triggered by an “irretrievable breakdown” of their relationship — which Julia contested.

She ultimately walked away with $1 million, a $1.9 million home and a Jaguar.

Julia Cabot did not immediately return a call made by The Post. Kristin and Andrew Cabot also did not respond to requests for comment Saturday.

Kristin and Andrew Cabot bought a $2.2 million two-story, four-bedroom New Englander-style house — located minutes from the Atlantic coast — just five months before the scandal.