the thing is i think that it might be heart failure b/c he went through a rough stage in his life and drugs were the only thing that helped him coupe with his problems and it got worse over the years and within the last year he enter himself in drug rehab and was trying to get his life straight so I give it up to him for trying to get himself clean but his family has really bad heart issues and the prolonged usage of drugs put a big stress on his heart thats what he told me atleast. I feel really bad for him and his girlfriend it sucks....