A Trump-backed congressional candidate has been caught sending a former Miss Oklahoma USA a series of intimate text messages, prompting his wife to brand her a 'home wrecking whore.'

Jackson Lahmeyer, 34, the Tulsa megachurch pastor whom Donald Trump anointed a 'MAGA Warrior' last month, faces a torrent of his own text messages obtained by the Daily Mail ahead of Oklahoma's 1st District Republican primary on Tuesday.

In them he professes his love for the former pageant queen, invites her to his hotel room, and recounts leaving Mar-a-Lago to visit a strip club at 1am after being offered cocaine, which he declined.

Her reply now reads as prophecy: 'Jackson if u become congressman & if ever got caught u would be headlines.' Then, one word: 'Pastor.'

Caitlin Simmons Key, a 40-year-old single mom who worked as a fundraiser for Lahmeyer's campaign, tells the Daily Mail they shared inappropriate texts before his wife learned of the relationship on the eve of Mother's Day.

'You are a home wrecking whore. Did you enjoy ruining our family?' Lahmeyer's wife Kendra wrote to Key on May 9: 'He has 5 kids.'

Key was swiftly cut off by Lahmeyer, she says, yet cash payments which do not appear in the campaign's FEC filings kept coming, as recently as the start of June, which she believes were meant to keep her quiet.

Her account lands days after she says she got a call describing campaign figures the night before, laughing and high-fiving that the primary was already in the bag. She says she feels 'righteous anger.'

A Christian, staunch conservative and supporter of Trump, Key says she cannot reconcile the man who privately pursued her with the pastor who preaches family values and seeks high office.

'There's a real problem with the fact that he's married and a pastor,' she said. 'There is a responsibility when you are leading people in the name of Christ to hold yourself to a higher standard.'

Key first met Lahmeyer in 2022, when he was a political newcomer mounting a long-shot Republican primary challenge to incumbent US Senator James Lankford.

She was active on the Oklahoma conservative scene; he was the pastor who had refused to shut his church during Covid. She signed on to raise money for the campaign.

Lahmeyer lost to Lankford in a landslide. But the two stayed in touch, and, Key said, grew closer as she went through a bruising divorce. She said he would call to check in. It became an intense friendship that went too far, she says.

'Eventually the conversations crossed the line of probably what most people would consider appropriate for a married man and a single woman,' she said.

Through that period Lahmeyer's national profile climbed. He founded Pastors for Trump and was brought into the president's new White House Faith Office. Key worked as a media contact for Lahmeyer's organization. He was in Washington constantly, she says, and repeatedly encouraged her to join him: 'You gotta come to DC.' She declined every time.

The race she joined this spring was an accident of timing. When Senator Markwayne Mullin was tapped for Homeland Security Secretary, a cascade of Oklahoma reshuffling left the 1st District seat suddenly open, and more than a dozen Republicans piled in, including Lahmeyer.

Key came aboard as a fundraiser and was paid $500 a week plus ten percent of what she raised, money she says was sent personally by campaign manager John Killian through the payments platform CashApp. She estimates she brought in around $20,000 to $30,000 in the short five-week period.

The texts shared with the Daily Mail trace an intimacy that deepened through the spring. From a black-tie party at Mar-a-Lago he messaged her selfies and called her 'super thin and very cute'; when Key asked why he was texting her from the gala, he replied: 'I like texting you lol.'

He sent a selfie from his room at a Hyatt Place and floated a 'late invite.' She declined.

After he returned from Mar-a-Lago he asked her to join him for dinner on his boat to discuss campaign strategy.

In a text when she mentioned struggling with rent, he answered: 'I got you.' 

His attention could tend toward possessiveness. 'I can still be jealous,' he wrote, after she pushed him to be realistic about his life as a married pastor.

After a dinner with a campaign donor at a private club in Tulsa he followed her home in his car, Key says. 'Yes i did lol,' he wrote when she challenged him. 'To make sure you were safe.'

Key says she was the one urging realism about his marriage. 'And at some point- if u need to get divorced. Then ok,' she texted him. His reply: 'Not right now tho lol.'

She put it to him bluntly: 'U r in love with me and we don't even have sex.'

'Well... hahah,' he replied. 'I'm a fan of you how about that lol.'

'Nobody knew how close we were,' says Key. 'Not one person on the planet besides me and him.'

But in a bitter irony, it was Trump who lit the fuse.

On May 6, the president endorsed Lahmeyer on Truth Social telling Oklahoma's 1st Congressional District: 'HE WILL NEVER LET YOU DOWN!'

The next day, Key shared the endorsement on Facebook with a header vouching for the candidate: she wrote that she knew him well, knew his family, and was ready to 'get to DC.'

It was that public revelation, she says, that undid them. The morning after the post, she got a call from campaign manager Killian. 'She's pissed,' Key said he told her, meaning Kendra Lahmeyer. 'She got into Jackson's messages.'

Key says Kendra called her earlier about the Facebook post but had only asked that she be more careful with her wording.

But she exploded once she read the texts.

'How dare you,' Kendra wrote on May 9. 'Don't you ever contact my husband again. He told me everything.'

Key denied it. 'I am not romantically involved with him. At all. If he feels differently towards me, that is nothing I have control of. I am dating someone!'

'You are a liar,' Kendra replied. 'So just stop. You are out of our lives, don't ever contact my husband again. Do you understand? Im not kidding. It was romantic, I saw it.'

What followed, Key says, was a scramble to contain the fallout, with Lahmeyer's own texts showing him managing the story for his wife.

'Kendra wanted to recover all of our messages. I deleted them,' he wrote to Key. 'I told her I got way too close to you and became emotionally attached. She lost it on me.'

In another message he insisted: 'I've been very clear with her that I got way to close to you and shared too much about myself... but we were not romantic.'

Key refused to back down. 'There is zero proof,' she shot back. 'I literally called u tonight and said this is the crap I was afraid of.'

He cast the fallout as his alone to absorb. 'I am really sorry for this. I should have never allowed it to get to this point,' he wrote. 'I will handle the mess I made and make sure no more of it spills over on you.'

Then, the morning after Mother's Day, came the instruction. 'Ok send me a screen shot of our last several texts and I'll show which ones to remove,' he texted on May 11.

Key says she went through her phone and deleted thousands of messages before abandoning the effort. She ultimately sent Lahmeyer nothing and kept everything.

'I'm not doing this bullshit,' she texted Lahmeyer. 'She's not ruining my future bc of her fears. Nothing is going on!'

In one of her final messages to Lahmeyer, Key wrote: 'My anger and hurt are valid. The accusations thrown at me and the disgusting character attacks made by your wife were completely out of line.

'I have been nothing but loyal to your family and your campaign from day one and I shouldn't be chasing someone down for my pay.

'And the truth is Jackson, if and when you win this race, I will be the least of her concerns. You will be surrounded by beautiful women in DC with a hell of a lot less integrity than I have.'

Lahmeyer cut her off going 'absolute ghost.' 

But what unsettles Key most is that the payments never stopped. Even as she was frozen out of the campaign, she said the weekly money kept landing, so long as she chased Killian down.

'Every week I have to contact John for at least three days prior to getting paid,' she wrote to Lahmeyer on June 1. 'Despite being treated the way that I have been, I've continued to raise money for your campaign.'

She is careful not to assert why. 'I'm in politics and I can't tell you why,' she said. 'I can share my opinion only,' she says, adding: 'They think that five hundred dollars a week is going to keep me quiet.'

Killian, she says, framed it differently, telling her the campaign would keep paying her through the end of the primary 'because it's the right thing to do.'

She insists she is not out for revenge, but refuses to make excuses for people she once admired.

'I've never claimed to be perfect. Quite the opposite, actually,' Key says. 'But the difference is, I'm not standing on a platform as a Christian leader and family man, asking people to vote for a version of me that doesn't exist.'

The Daily Mail has contacted Lahmeyer and Killian for comment. On Sunday, Lahmeyer canceled his sermon at Sheridan Church with his congregation informed 'something came up.'