Everyone is 'dumpable'. EVERYONE, no matter how beautiful/handsome/smart/wealthy/successful and that's not even counting the ones who really deserve it. In fact, some will make it a point to do so if you happen to fall into one or more of these categories just to make the point.
Woe to anyone whose ego requires that they be the exception to this rule.
Yes, my dear, you too can be dumped and learn from it. Time to say 'thanks' to the breeze and move on w/a whistle.
Second thoughts can generally be amended with judicious action; injudicious actions can seldom be recovered with second thoughts.
--Cyteen by C.J.Cherryh