One night, huddled around a small fire, Will turned to Mike, his voice a whisper. "Mike..." he rasped, a long pause following as his empty eyes, which still held a glimmer of the boy Wheeler knew, searched his boyfriend's face. "...Do you think you'll kill for me one day?"
Mike's heart clenched. He knew what Will was asking. He was asking for a mercy killing, for release when the hunger and the infection finally consumed him.
"Yes, of course, I will, my darling," Mike replied, his voice thick with emotion. He took Will's cold, lifeless hand in his own and squeezed it gently. "I'll do anything to protect you, even from yourself."
Will is a zombie, Mike is a survivor. Apocalypse from season five ;)