Amy Winehouse and husband Blake Fielder-Civil agreed to go into drugs rehab after seeing their dads nearly come to blows, friends said last night.
Amy was in tears after the row during a showdown with their families over their heroin and cocaine addiction.
A source close to the family told the Mirror: “It broke Amy’s heart to see her parents and in-laws fighting.
“That was the point when she realised all the drink and drugs were causing huge problems for everybody.”
The party-loving couple flew to the US for intensive counselling and detox treatment after also seeing a leading Harley Street doctor recommended by former wild child Kelly Osbourne.
Jazz diva Amy’s drink and drug problems came to a head on Wednesday when she collapsed following a three-day bender with 25-year-old Blake.
Amy, 23, was taken to hospital in the early hours after taking a cocktail of heroin, ecstasy, cocaine, the horse tranquilliser ketamine and booze.
Later that day, she and Blake checked into a suite at the Four Seasons Hotel in Hook, Hampshire.
But on Friday night they were caught by her best friend Juliette Ashby smoking heroin in their £3,000-a-night hotel suite.
Amy’s taxi driver dad Mitch “flipped” when he heard - and next day they were joined by worried Mitch, wife Janis, Blake’s stepfather Giles Fielder-Civil and mother Georgette.
During the row, Mitch grabbed Giles by the throat and “threatened to rip his head off” .
The source said: “It was only when Amy saw her family falling apart that she realised she had to do something.
“She confessed that she and Blake had drug problems and had to have treatment together.”
Mitch is also said to have demanded that Blake be fitted with an implant to curb his drug-taking.
Blake refused but agreed to join Amy on a drug counselling and treatment programme.
The source went on: “They both admitted taking cocaine and heroin. But they denied they had been injecting heroin.
“At one point, both Amy and Blake stripped off in front of Georgette to prove they had not been using needles.
“But they now realise that if they don’t get help now, they will both die young. This is their watershed, their wake-up call.
“Both families were terrified by the state Amy and Blake had got themselves in and decided enough was enough. It was the first time Blake also admitted he had a drug problem.
“It was a brave step for both of them to agree to treatment and their families are very proud of them.”
The source added: “They are both to blame. They are both as bad as each other. But at least they have admitted they have got a problem and are taking action to help each other.”
Before flying off on Saturday, Blake phoned his mother and said: “Please stop crying, everything will be OK.”
Amy told her mother-in-law: “I’m so sorry. I love you. Please don’t worry.”
Last night they were spending their third night at the clinic, where they are sharing a bedroom.
They have agreed to have their mobile phones confiscated and to have no contact with the outside world.
Amy has also agreed that her career must be put on hold, despite her desire to get back on the road and perform.
Heroin is a white powder made from the dried sap of opium poppies.
The opium poppy was cultivated in Mesopotamia as long ago as 3400 BC.
From 1898 to 1910 heroin was sold as a painkiller and a cough medicine for kids.