It was well known that Amy had some tumultuous relationships, some people are saying that in addition to being a alcoholic she might have been a love addict. One blog says:

"Winehouse died alone in the bedroom to which she’d retreated after her boyfriend, director Reg Traviss, left her a month ago. It wouldn’t be the first time a love addict in withdrawal withdrew into a room with no company but the Bottle Brothers: a bottle of pills and a bottle of booze. Nor would it be the first time Winehouse exhibited symptoms of love addiction: Only weeks after meeting Blake Fielder-Civil, in 2005, she tattooed his name across her heart. They married in 2007 and divorced in 2009. This is the trouble with love at first sight. Damn x-ray vision never works right."

I think the author, Ethlie Ann Vare might have a really good point.