A short, finished list rather than an endless feed: 60 of the best break up quotes ever written, picked out of the full break up archive on QuoteForever. You will find Kenneth C. Griffin, Winona Ryder, Wayne Static and Kevin De Leon among them.
Read the list top to bottom, or use it as a starting point - every author name links to everything else they said, and every quote has its own page you can share or turn into an image.