The act of kindness seemed destined to pull Johnny Bobbitt from the depths of homelessness and drug abuse he struggled with on the day Kate McClure’s car sputtered to a stop in front of him.

She was a motorist on Interstate 95 in Philadelphia who found herself stuck on an off-ramp, scared and out of gas.

He was a homeless veteran who told her to lock her doors, then spent his last $20 on that day in October to bring her a canister of fuel.

Later she sought to repay the favor, first with cereal bars and warm socks and spare dollars, then with a GoFundMe campaign to raise money so the good Samaritan would not have to sleep under a bridge. Bobbitt, she told anyone who would listen, deserved a fresh start.

“I wish that I could do more for this selfless man, who went out of his way just to help me that day,” she said in the GoFundMe campaign, which she and her boyfriend, Mark D’Amico, crafted in the car after visiting with Bobbitt. “He is such a great guy, and talking to him each time I see him makes me want to help him more and more.”

They hoped the GoFundMe would raise $10,000, but the story resonated. It was featured in national newspapers, including The Washington Post. The pair made an appearance on “Good Morning America" and were interviewed by the BBC — a feel-good story at the start of the holiday season. In a few months, the campaign had raised more than $400,000 from nearly 14,000 donors, and Bobbitt’s prospects had brightened.

But over the past 10 months, the sweet story has soured.

There are accusations of mismanagement and outright theft of the money raised on Bobbitt’s behalf. The GoFundMe cash, Bobbitt suspected, had been squandered on vacations, a luxury car and more than one addiction. And this weekend, the threat of litigation loomed.

Last fall, McClure said, the plan was to get Bobbitt a house and his dream truck, a 1999 Ford Ranger. Bobbitt also planned to donate money to people and organizations that had helped him as he struggled with homelessness.

The plan was to make the second act of Bobbitt’s life a successful one, and for a while, things seemed happy. Pictures showed Bobbitt at McClure and D’Amico’s house at Christmas, posing next to the tree, wearing adult onesies and baking cookies.

In reality, things weren’t that rosy. Instead of a house, McClure and D’Amico got Bobbitt a camper, which they kept in their names and parked on land owned by D’Amico’s family, according to news reports. They bought him a television, a laptop and two cellphones, food and clothing — and a used SUV that was soon broken-down and idle.

What he didn’t get, though, was any type of ownership over the money raised on his behalf. He met briefly with a financial adviser, but there was never any lawyer or any trust, according to Philadelphia CBS affiliate WTVR. D’Amico said he kept $200,000 — what remained after buying the camper and the SUV and other expenses — in a savings account that he would gladly turn over to Bobbitt once he kicked an addiction to opioids and managed to hold down a job.

But Bobbitt said he saw troubling signs for the money that thousands had donated to him. McClure is a receptionist for the New Jersey Department of Transportation and D’Amico is a carpenter, according to the Philadelphia Inquirer. But suddenly she had a new BMW, and the couple was taking vacations to Florida and California and Las Vegas, Bobbitt told the Inquirer. He learned of a helicopter ride they took over the Grand Canyon.

And he told the Inquirer that D’Amico has gambled away some of the GoFundMe money. (D’Amico told the newspaper he had used $500 from the account to gamble on a night when he forgot his SugarHouse Casino card but had “quickly repaid” the money with his winnings.)

Good intentions had given way to something else, Bobbitt told the Philadelphia Inquirer.

With that amount of money, I think it became greed,” Bobbitt said.

According to the Inquirer, D’Amico spoke of expenses he and his girlfriend had incurred caring for Bobbitt, including time they took off from work.

And D’Amico gave an “evolving account” of how he handled the money to the Inquirer:

Initially, he said he would not produce financial records because the money was put into an existing account at PNC bank that does not belong to Bobbitt. On Wednesday, he said he and McClure had opened up a separate account for Bobbitt. On Thursday morning he said he told a reporter the trusts had been set up because that’s what Bobbitt wanted him to say.

The money that came to Bobbitt couldn’t stop his addiction. He went through two unsuccessful stints in rehab that brought him no closer to being sober. Some of the money GoFundMe donors gave to him ended up in the pockets of drug dealers, Bobbitt told the Inquirer.

In April, six months after his fateful meeting with McClure, Bobbitt told the Inquirer that he had been clean for three weeks and jobless for much longer.

“It’s going to be a struggle for the rest of my life,” he said of his addiction.

D’Amico, who frequently gave Bobbitt a ride to counseling sessions and group meetings, told the Inquirer that giving a six-figure sum to a man addicted to opioids is “like me handing him a loaded gun. He has to do what he has to do to get his life together.”

On Saturday, it was unclear how much of the money earmarked to Bobbitt had actually gone to him. D’Amico told the Inquirer he had made some lump sum payments to Bobbitt, but D’Amico and McClure did not return calls or messages to The Post seeking comment. They also didn’t they provide financial statements or records in interviews with other news organizations.

Chris Fallon, an attorney hired by Bobbitt, told The Post on Saturday that they “are attempting to secure an accounting before a scheduled meeting on Monday” and didn’t want to speak for fear of jeopardizing arbitration efforts.

GoFundMe told the Associated Press it has launched an investigation to determine whether the money was mismanaged and is working to ensure Bobbitt “receives the help he deserves and that the donors’ intentions are honored.”

If Bobbitt’s claims are true, it would be the biggest case of GoFundMe fraud or mismanagement seen by GoFraudMe, a whistleblower organization, according to Adrienne Gonzalez, the site’s publisher.

Some of the hucksters are serial scammers who start dozens or hundreds of bogus campaigns in a day, said Gonzalez. Others fake diseases, figuring no one will demand evidence of, say, a recent cancer diagnosis.

And still others, she said, end up unwitting fraudsters — unqualified to handle the vast sums of money they suddenly find themselves stewards of.

“From the bat, it’s clear that there was no sort of plan,” Gonzalez said of Bobbitt’s case. “She didn’t plan on it exploding, but once it started to explode, she didn’t think about how this man was actually going to get help. People contributed not thinking that this is a sick individual who needs help — and no amount of money is going to make that go away overnight.”

Savvy donors should look for a plan that ensures the money will make it to a needy person, and some type of accountability measures to ensure donations don’t end up in the wrong pockets, she said.

Nearly a year after meeting McClure, the camper is gone, and so is the SUV. Bobbitt told the Inquirer that he remains an addict and still doesn’t have access to the money that was supposed to turn his life around.

At night, he sleeps under a bridge at the intersection of Callowhill and Second Streets, near an I-95 on-ramp. He spends his days doing exactly what he was doing when McClure’s car stopped in front of him: panhandling.