Kelsey Parker said she held her husband Tom Parker’s hand when he died after suffering from an inoperable brain tumor.
Band member he Wanted died in a hospice near the couple’s south London home on March 30 at the age of 33.
Speaking to the Sun on Sunday, Parker, 32, said: “We had music playing in the room all day for him, it was his life and it was his passion.
“Live Forever by Oasis was playing. He was sedated and I was holding his hand.”
The couple met in their teens and later married before having two children, Aurelia and Bodhi.
Parker revealed that shortly before his death, Tom took off his wedding band and placed it on her finger.
She added: “He said, ‘I know you’re going to be fine.’ He then took off his wedding ring and placed it on my finger.
“I think he knew it was the end, but it still had Tom’s fight in it. He didn’t want to go.
“You always want that miracle and I was wishing for that miracle. Of course you want that.”
Tom’s funeral took place in Queensway, Petts Wood in south east London on 20 April.
The singer’s coffin was carried by his bandmates from The Wanted, while Oasis’ Champagne Supernova played for fans gathered outside.
Jay McGuiness, Max George, Siva Kaneswaran and Nathan Sykes served as coffin bearers in the procession at St Francis of Assisi Church.
Parker said that after her husband died, she told him he was her “everything”.
“When he passed away I closed his eyes and gave him a kiss and said I love you. I told him he was my everything,” she said.