How quick are you in pulling the plug on a relationship?

If you have a mate, married to them or not, how quick would you flush a relationship if something really major becomes known? If you discover your man of 6+ years dresses up in women clothes and goes out on the town or you discover he has regular sex with a blowup doll, etc? If you discover your woman had 2 other kids by two other men but never told you would that do it? You discover she did 5 years hard time on a plea deal off the suspicious death of an ex-lover; that would kill it for you? How little or how major of an unknown fact would be the straw that broke the camel’s back and there was no way to dismiss it? Women have stayed with cheating men, and guys have taken their straying women back. Not ever one does it but plenty, so what could be worse to make you take a hike never looking back, and does the total number of years together facter in at all?