“What I need you to tell me is, ‘I’m not sure, but I turn down temptations every day. I eat salads when I crave hot fudge sundaes, I force myself to go to the health club when I’m feeling dead tired, I discipline myself in a hundred ways to keep myself healthy, and I can do the same for us.’ If you’re so unsure about controlling your impulses, why should I believe you won’t cheat on me again?”