Let me start by saying that I am sorry for your loss.
Now, did you know that 1,260,000 people suffer heart attacks per year? How can you so certainly state that his usage was the sole cause a condition that is only slightly less common in America than the flu? I'm sure he had eaten more cheeseburgers in his lifetime than he had taken injections. Certainly there were no other lifestyle factors or preexisting conditions that may have contributed to an equal or even greater degree?
While it is true that long term abuse of anabolic steroids can contribute to heart disease, are you truly qualified to declare that moderate, responsible usage by adults cannot be undertaken in a safe manner? I am interested in reading the findings of this coroner, as to my knowledge, there have been ZERO documented deaths attributed directly to steroid usage.
If usage is a lifestyle factor that can contribute to a condition, then that is one thing. It seems, however, that you are directly attributing your fiancee's death to his usage of AAS. This is understandable, as the grieving may oftentimes need to associate blame directly to one source rather than understanding that circumstances and hundreds of thousands of individual actions contributed to the death.
It is entirely likely that your fiancee knew the risks associated with what he was getting involved in and chose to continue in spite of those risks. I doubt that he would tell you anything about what he was doing other than that it was entirely safe, simply for the sake of stability. At this point, there is enough information about AAS readily available that no one has an excuse for being an uninformed user.
Before trolls like slimthugger attack me for being insensitive (as they invariably will since they care neither for reason nor the feelings of the grieving, but only for the advancement of their draconian prohibitionist platform), let me again express my condolences.
However, grief offers no justification for the propagating of half truths or pseudoscience.