For whatever reason, I didn’t want to lie to myself and say it wasn’t cheating. No matter how undecided I was about Glenn, whether I was using the evening as a test to see if I really loved him or not, the fact of the matter was that I had agreed to the blind date and had therefore opened myself to the possibility of cheating. Of that in itself, I was undoubtedly guilty, but guilt, oddly, wasn’t the emotion that came over me—it was irritation. That feeling was blown away, though, the moment I shook my date’s frosty, glistening hand. …