Reg Traviss, Amy Winehouse's heartbroken boyfriend, says of his grief over the singer's sudden death: "I can't describe what I am going through."

"I want to thank all those who are mourning the loss of Amy - such a beautiful, brilliant person and my dear love," Traviss told the UK's Sun.

Reg, 35, wept beside fans who paid tribute to the music star outside her North London home, and again today at Amy Winehouse's funeral.

Reg Traviss, right, with Amy's father Mitch Winehouse.

Today's service comes after police revealed they will have to wait 2-4 weeks for the results of toxicology tests to establish her cause of death.

A distraught Reg said that contrary to reports of Amy being distraught over their breakup, she had been upbeat and full of life in recent days.

Traviss said Amy had been excitedly choosing clothes to go to a pal's wedding on Sunday. He added: "Amy kept trying to decide what to wear."

"She had laid out her dresses to make up her mind. She was really looking forward to it." Obviously, she didn't make it, dying a day earlier.

"The last three days have been hell," Traviss said.

Saturday, the film director's world came crashing down when he learned Amy, just 27 years old, had been found dead in bed at her home.

"We have suffered a terrible untimely loss and want peace now. I can't describe what I am going through. I want to thank so much all of the people who have paid their respects and who are mourning the loss of Amy."

"She was such a beautiful, brilliant person and my dear love," he added. "I have lost my darling who I loved very much."

Reg, speaking of Amy for the first time since her death, went out of his way to deny rumors that she had been in a drug-fueled haze.

"She has been full of life and so upbeat recently, exercising everyday and doing yoga," he said. "This terrible thing is like an accident."

Reg Traviss had being seeing Amy for two years.

Amy's family, who saw clean-cut Reg as the perfect boyfriend after her catastrophic marriage to Blake Fielder-Civil, thought highly of him.

A source said: "Reg has been dignified throughout his relationship with Amy. The family, they all love him dearly. He's a good guy."

"What happened in their life together remained very private because he was determined to help get her back on her feet properly."

"He wasn't interested in the limelight - unlike a lot of her exes."

Reg, who spent yesterday with Mitch, Amy's mom Janis, brother Alex and manager Raye Cosbert, tried to keep Amy safe from her demons.

But he spent a large part of the past year working on his latest movie, Screwed. Filming took him away from home. That left Amy to her own devices in London - and at the mercy of those who preyed on her addictions.

The exact cause of Amy's death is not known. A post mortem carried was inconclusive and toxicology tests will take weeks. The singer's family believe she was killed by either a heart attack or a fatal seizure, not drugs.

Amy had regular heart palpitations and had suffered seizures - likely caused by the pounding her body had taken during years of abuse.

[Photo: WENN.com]