“It was horrendous. He made it very clear that he didn’t love me. I felt it was because of the way I looked and what had happened.
“Now I don’t feel anything about him, he hurt me but there’s no point getting upset over it.
“I’ve just had to be strong about it all.”
Emily had originally moved to Australia with her family in October 2012 to start a new life, settling in Perth, Western Australia.
But the families dream turned to a nightmare after Emily had the first of four seizures and she was diagnosed with Astrocytoma – a type of brain cancer – in February 2016.
Emily’s mum Joanne Nicholson, 51, Emily's full-time carer, said: “We moved to Australia for a better life.
“Emily was doing so well, she had her own house and a good job as a bar manager and she was also picking up work as a model and nightclub host.
“She was vivacious, fun loving and a bit wild. She’s always been a ferociously hard worker.
“She was blossoming, she loved life and now it’s all gone.
“When she kept having seizures, we just thought it was stress because she was working so hard.
"When we went into the doctor’s office and he told us our world just fell apart.
“I look back and think how did we even get home? I remember breaking down crying, Emily looked at me and asked me to help, and there was nothing I could do.
“I had no power and everything was taken out of our hands.”
After her terminal diagnosis, Emily and Jamie decided to marry as soon as possible in August 2016 but had to postpone their wedding until March 2017 because Emily needed surgery.
But a week before their wedding, Emily claims she received a message from New Zealander Jamie, a cable layer, telling her he wanted to 'call it a day'.
Despite the break-up, Emily’s family claim Jamie still attended his own stag party despite calling off the wedding only hours before.
Emily, who had also discussed freezing her eggs so she could later have IVF with Jamie if she recovered, said: “He told me he didn’t love me anymore.
“For months he’d been going out with his friends but obviously I couldn’t do that.
“We were looking to build our lives together in the time we had left."
Joanne added: “Emily had the surgery and had a month to go till the wedding.
“We were sat with her when it happened, she just burst into tears.
“He went on his stag do on the Saturday evening even though he’d called things off.”
Following her diagnosis, the family decided to return back to the UK full-time in July 2017.
They are now fundraising via GoFundMe in the hope Emily can access pioneering immunotherapy vaccine which will cost £30,000.
Emily has already defied her life expectancy given to her by doctor's but no one knows how long she'll have left.
Joanne said that despite her initial anger towards the man who broke her daughter’s heart, she has now come to terms with his behaviour.
She said: “I was angry at him, but as time has gone on I'm not angry at him anymore.
“He was lovely, he was a really nice lad and it got to the point where she couldn’t go out and she was getting bigger.
“When you go through something like this, life is too short to hate anyone – he did his best but I don’t blame him, it got too much for him
“Emily’s illness has been hard but as a parent we needed to be here for her.
“There are some moments when I think that I'm the unluckiest person in the world.
“People say to me I'm so strong but what’s the alternative? We have to keep fighting.”
In response to the allegations, Jamie Smith said: “It was the other way around, she actually left me, I never left her.
“And, secondly, I never left her for anything to do with her weight gain.
“If that was the case I would have left her months before we split up, because she started putting weight on before that.
“It had nothing to do with that at all.”
Emily and Joanne both said Jamie's suggestion she broke up with him was categorically untrue.