A social media influencer was ordered to pay $154,000 to her ex-boyfriend after a Canadian judge found she spread rumors online about him infecting his partners with sexually transmitted diseases.

Noelle Halcrow, of Vancouver, began an on-again, off-again relationship with business consultant Brandon Rook in 2015 — then began slamming him online in 2016 after he broke it off, CTV News reported last week.

“Known cheater, proud of it! STDs and spread them …,” read one of her Instagram posts presented in court in British Columbia.

The roughly 100 demeaning missives were posted on various Instagram accounts and on websites like “cheatersandbastards.com” and “stdregistry.org,” court documents say.

The posts were defamatory and sent by Halcrow “out of spite,” Supreme Court Justice Elliott Myers ruled.

Halcrow, who has some 17,000 followers on Instagram, was “motivated by malice” when she sent out the posts over the course of a yearlong smear campaign that the judge described as “relentless.”

“The courts have recognized that the internet can be used as an exceedingly effective tool to harm reputations,” Myers wrote in his opinion. “This is one such case.”

Halcrow, a self-described style blogger, claimed she wasn’t behind the slurs, and that they were written by friends and other people, according to the court documents.

But the posts were traced back to her IP address, the court papers say.

Her large social media following made the penalty she was slapped with higher than it would be for other users, experts told CTV News.

“It’s like publishing a defamatory statement to the world,” said Bryan Baynham, a defamation lawyer.

“It’s worse than publishing it in a newspaper in many cases,” he said. “It’s very serious and you better have the facts to back it up.”

The ruling against Halcrow is one of the biggest defamation cases in British Columbia’s history, the outlet reported.