Woog, I just got in....I hear what you are saying. I got the shot at piecing or at least I thought I did. Let's be brutally honest here....what are the chances of success considering the faithfullness issue hanging over us? It's hard to comprehend...I am in the same boat as you are regarding how I treated W. I ask myself the same question you do. I still can not come up with an answer other than that when you fall for someone your brain is not functioning on all cylinders. I know that is oversimplifying but I can not come up with anything better right now.
As far as the test goes...I am failing miserably right now but this is not a sprint. We will come out on top in the end...maybe slightly bruised but much stronger and better....
Chin up amigo...I still believe that nice guys will eventually prevail. We have to.