Drugs and violence have undermined so many relationships in the music industry over the years. However, there are more than a handful of truly tragic cases that we've witnessed.
Sid and Nancy, Amy and Blake, Kurt and Courtney and many other couples all struggled with drugs. The cocktail of chemical additives stirred up all kinds of unpleasant results.
Ike and Tina, Whitney and Bobby? Torn apart by domestic abuse and now we're seeing similar patterns in Rihanna and Chris Brown.
Then there are just the downright strange relationships out there. Remember when Michael Jackson wed Elvis' daughter?