many times used in a funny situation. commonly used when a relationship end badly or with a comical twist. there is also a website dedicated to the phrase... singletilldeath.com
Yesterday, My boyfriend broke up with me because my little sister got in a fight with him while texting on my phone. She forgot to tell him it was her. I think I'll be Single 'Till Death.
by http://singletilldeath.com August 21, 2009