The family of hotel heir William ‘Billy’ Evans reportedly believes he has been ‘brainwashed’ by his fiancee, the disgraced Theranos founder Elizabeth Holmes.

Despite attempts by close friends and family members to talk him out of marrying Holmes, Evans insists on going ahead with the union, according to the New York Post.

‘His family is like, “What the f*** are you doing?”’ one source close to Evans told the New York Post.

‘It’s like he’s been brainwashed.’

Evans, for his part, reportedly told his friends: ‘The media has it all wrong about her.’

Despite the unwanted attention, the couple has no plans to dissolve the relationship.

White fang: Elizabeth Holmes, 35, is dating William 'Billy' Evans, the heir to a hotel fortune who worked for the driverless car start-up Luminar Technologies (Holmes and Evans with Balto)

Not 'Sunny': Holmes and Evans live in San Francisco in a luxury high rise with Balto, the husky whom Holmes believes is a 'wolf'

Love bugs: Evans wrote in another snap with Holmes that 'the last year has been the best I've had' (above)

'The wedding invites were sent out about two weeks ago,' the source said.

Holmes is the founder of Theranos, a tech firm that under her leadership claimed to have invented a device that could diagnose illness by analyzing blood from a finger prick.

But those claims had no basis in fact.

Last year, she and her company were indicted on charges that they engaged in schemes to defraud investors, doctors and patients.

Prosecutors said that Holmes and former Theranos CEO Ramesh Balwani used advertising and solicitations to encourage doctors and patients to use its blood testing laboratory services despite knowing the company could not produce accurate and reliable results consistently.

Timeline: Evans is the son of William and Susan Evans, and his paternal grandparents founded the Evans Hotel Group which owns properties on the West Coast (Evans left in 2015, Holmes right with Jared Leto at the Women of the Year Awards in 2015)

Dad: Evans' father is described as 'a passionate collector of California Impressionist art, rare specimen palm trees and subtropical plants, and antique racing automobiles' (Evans and his father in 2015)

Squad: Evans' mother (above with her son and not Balto in 2012) 'made the commitment to dedicate herself to raising their three children – Billy, Rex, and Gracie—before accepting her current position' reads her bio on Evans Hotel Group

Holmes, who started Theranos at the age of 19, was celebrated as a rising star of Silicon Valley until it became clear that many of the claims about the company’s supposedly revolutionary blood test were bogus.

The company reached a $9 billion valuation based on its promise to disrupt the laboratory testing business.

Holmes, who is due in court later this month, could face up to 20 years in prison if convicted.

Evans, however, doesn’t appear too concerned about his future wife’s legal perill, according to sources.

‘He’s had a lot people very close to him sit him down and have a talk,’ the colleague, who used to work with Evans at Luminar Technologies in Palo Alto, California, said.

Among the messages that Evans has received include: ‘This could be the biggest mistake you’ll ever make’; ‘The negativity around her could blow back on you’; ‘You’ve never encountered anything like this’; and ‘You need to think hard about what you’re doing.’

The source said that the relationship is advantageous for both Holmes and Evans.

‘It’s kind of like Billy is her shiny new toy,’ the colleague said.

‘She’s super enthusiastic about being with him.

‘The relationship is opportunistic for the both of them.

‘Elizabeth needs a lot of support in her life right now, and Billy is looking for whatever way he can raise his profile.’

By being in a relationship with Holmes, Evans is at risk of ‘destroying [his] social value,’ according to the source.

‘But you will get something else in return’ - fame.

The pair share a luxury apartment in San Francisco, are co-parents to the Theranos founder's wolf-dog Balto and even traveled off to Burning Man last year to party in the desert as the doors to Holmes' company were shut for good.

A photo was posted by the pair on August 29, just six days before an email was sent to the few remaining employees of Theranos announcing that the company was dissolving for good.

Holmes seemed carefree at the time, wearing purple sunglasses and a white military-style blazer with sequined pinstripes and a fur collar - a far cry from her standard uniform of black turtlenecks and pants.

Evans meanwhile wore a military hat and a shirt that read: 'Sex Breakfast of Champions.'

A source close to Evans said that the relationship is advantageous for both Holmes and Evans. ‘It’s kind of like Billy is her shiny new toy,’ the colleague said

In another photo, Holmes smiles while wearing a shirt with the name of Evans' company written across the front. The two are joined in that photo by Balto.

Evans’ colleague says that Holmes’s fiance likes to date women who attract attention.

‘I met two of his ex-girlfriends,’ the colleague said.

‘They were both Instagram models, and he was super proud of that fact.

‘He would date young, absolutely drop-dead-gorgeous girls [with big followings].’

The source said that Evans would routinely follow his social media accounts to keep track of the number of followers and likes he generated.

But since news broke of his engagement to Holmes, he has deactivated his Facebook and Instagram accounts.

Luminar is a tech firm that manufactures sensors used for self-driving cars.

According to Evans’s colleague, Holmes would bring her dog, Balto, and pay a visit to Luminar’s offices ‘a lot.’

Some employees did not like the fact that Holmes dropped by, especially .

‘It was inappropriate for her to be in the office,’ the colleague said.

‘Luminar has been in a constant state of flux for a year and a half [due to layoffs].

‘And then you have this total fraudster in the office while you have investor meetings.’

‘If I was an investor and I saw [Holmes] walking down the hallways, I’m going to be like, “Holy s***, get me out of here!”’

A spokesperson for Luminar told the Post that Holmes ‘did not frequent the company’s office and had no business with Luminar Technologies Inc.’

Evans no longer works at Luminar, according to the Post.

Evans is a far cry from Holmes' ex, Balwani.

Holmes and Balwani met in China just after her high school graduation when he was 37 and she was just 18.

Balwani divorced his Japanese artist wife Keiko Fujimoto shortly after he met Holmes, and the two kept their relationship a secret for years.

Evans is a player in the Silicon Valley scene, and recently worked at Luminar as the director of special projects.

He attended prep school in San Diego from an early age, enrolling at Francis W Parker when he was in kindergarten and remaining there until he went off to college.

Evans chose MIT for college, and was able to also spend time in China at Fudan University.

He graduated in 2015 with a Bachelor's Degree in Science and Economics, at which point he took a post at LinkedIn before making the move in 2017 to Luminar Technologies.

That is the company which is currently hard at work attempting to create and then mass market driverless cars.

Shady lady: Holmes and her ex Sunny Balwani are facing decades in prison for defrauding investors and of defrauding doctors and patients

Photos of the couple obtained by DailyMail.com show the two are very close, and very private.

They are seldom seen with anyone but each other or Balto, who wrecked havoc on the board rooms of Theranos in the company's final days,

Evans is one of three children born to William and Susan Evans.

The family grew up in the San Diego area, which is where Evans' grandparents, William and Anne, started the Evans Hotel Group in 1953.

The hotel group now owns three major resort properties on the west coast: the Catamaran, the Baha and The Lodge at Torrey Pines.

Anne remains the chairman emeritus of the company, and when her husband passed away in 1984 her children William and Grace joined the company.

They were soon followed by their spouses, and those five now comprise the leadership team for the hotel group.

On the company website, Evans' father is described as 'a passionate collector of California Impressionist art, rare specimen palm trees and subtropical plants, and antique racing automobiles'.

Evans' mother, it is noted, 'made the commitment to dedicate herself to raising their three children – Billy, Rex, and Gracie—before accepting her current position.'