Have you ever caught a someone you were in a relationship cheating on you?

Only once and it was back when I was a Senior in High School I was seeing this guy who I had, had an off and on relationship with all through Junior High and High School, well were in one of our on again stages and we were suppossed to meet each other at a football game. He was in the marching band so I was suppossed to go down and meat him after the opening ceremonies of the game. Well when I went to meet him he was in a very tender embrace with the girl he had just recently broke up with. Apparently they were on again too. Well I don't need a brick to tell me when it is time to get out of a relationship. I just walked away and joined some friends at the football game and that was the last time we were on.