One early morning in September 2016 Raquel walked into the living room in her pyjamas to find her husband looking at her with a puzzled expression. He spoke to her as if she were a stranger, without a trace of affection. He seemed to have no idea who she was.
"I asked him: 'Do you know where you are? Do you know what year this is? Do you know what my name is?' And he said 'No' to all these things," Raquel says.
"I could tell that the more I asked, the more upset he was becoming."
Raquel reassured him that this was their home, she was his wife and they had three children together. Adam started to cry.
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"I need you to get me my ID, where is my phone and my ID?" he said.
Raquel told Adam to get dressed and that she was going to take him to hospital immediately. She was worried that something might have gone dangerously wrong with the blood vessels in his brain.
When Adam opened his cupboard, he asked: "Where are my suits?"
Raquel explained that he didn't have any suits, that he was a personal trainer.
Adam got dressed and reluctantly followed this woman who he did not know to the hospital. They clung to each other.
Raquel was being gentle with Adam - she knew that his memory had failed once before, after a woman tried to kill him.
In 2001, at the age of 35, Adam had been a branch manager for telecoms giant AT&T and a devoted church leader in Lubbock, Texas.
After the break-up of his first marriage, he started a new relationship but it ended in disaster. His new girlfriend was abusive, and ultimately strangled him with an electric cord, leaving him for dead in his garage.
His heart stopped three times on the way to hospital, but he was resuscitated by paramedics each time. Adam ended up in a coma for four months.
"When I woke up I didn't know who I was - I didn't know that I had been married and divorced and had two children," says Adam.
He spent a year in hospital, learning how to walk and talk again. But the memories of his past life didn't return.
Months went by before Adam was reintroduced to his son and daughter. He found it very challenging to look at them for the first time.
"How could a father, a dad, forget his biological children?" he says.
When he finally came home, the house was full of photographs he could not connect with and awards he had no memory of winning. His past was no longer there.
"I was trying to understand who this man Adam was. Can I live up to this person?"
He couldn't go back to his old job and feared he wouldn't be able to afford his previous lifestyle.
"I don't even remember what I went to school [university] for," he says. "It's evident that I was there, but how I got there, how I sustained it, was unimaginable."
He decided to leave the town he was in and start again. He moved to Phoenix, Arizona, with his children, and became a personal trainer.
It was there that he began online dating and in 2012 he began messaging Raquel, a 30-year-old marketing manager with a young daughter.
They agreed to meet in a small hipster bar and grill in downtown Phoenix. Raquel sat at the first booth waiting for him to come in, but an hour later he still hadn't shown up. Eventually he called her - from the wrong restaurant.
"He was so apologetic and humble and I thought: 'OK everybody makes mistakes,''" says Raquel. Besides, she liked his Texan accent.
Adam finally walked in, wearing a leather jacket and jeans.
"He wasn't trying but somehow he looked so cool, he was so handsome," says Raquel.
"I couldn't keep my eyes off her - she had these beautiful dimples and she had this really sweet smile," says Adam.
They clicked and began to see each other more.
After a few months of dating, they moved in together with their children, and in July 2015 they married in a little chapel outside Phoenix.
But all memory of Adam and Raquel's four years together had been wiped out that morning in September 2016.
While Adam was in hospital undergoing tests, he called the one person he knew he could trust - his mother. She reassured him that he had been in love with and married to Raquel.
"She loves you. You have my blessing," his mum told him.
"So I began to put a little more trust into her and started asking questions here and there," Adam says. "There was some excitement about it and there was a little bit of mystery about who this really nice woman is, and was."
They started dating and getting to know each other again in hospital, meeting in secluded corners and chatting over grilled-cheese sandwiches at the cafeteria.
"We'd get stir-crazy at night and end up walking downstairs in search for midnight snacks in the vending machines," Raquel says.
"She would show me pictures on her cellphone on what back in the day I would have called MySpace but it was Facebook - so that was interesting," Adam says.
"Silly things would happen - like he said, 'Do you have our marriage certificate?' and of course I did," says Raquel.
She was still in the process of changing her name to Adam's so she had it in her handbag. She grabbed it and he laughed.
"I think he began to see glimpses of the woman he married for better or for worse," she says.
But it was not all positive. At one point Adam decided it would be better if they split up, and even told her: "I am not attracted to you, and you do not turn me on at all."
When she heard that, Raquel prayed.
"It's hard to love someone when they have no idea who you are and they cannot love you," she says.