The straw that broke the camels back.

So, I tried to remain friends with my ex significant other, but it didnt happen.  He decided to bring the person he cheated on me with back into his life... when that happened, I was done with him completely.  I never planned to get back with him, and it was dumb of me to want to try to be civil and nice and remain friends with someone who caused me so much pain.  I guess I was trying to be above it all.  But I dont plan to sit around and watch him flirt with the girl he cheated on me with just to get back at me.  NOPE... that's were I draw the line.
So buh-bye... thanks for making this a guiltless decision. 
This not only became a 'end a relationship' goal... but it is now an 'end a friendship' goal... and that is 100% completed too.