When I was in high school my best friend's great grandfather passed away. Her greatgrandmother began telling her family she would follow him shortly because she just could not live without him, her heart was breaking. She passed away within a week. She died in her sleep due to a previously undiscovered heart condition according to an autopsy. Her family believes that her heart did truly break.
(Denny Crane: "Sometimes you can only look for answers from God and failing that... and Fox News".)