Originally Posted by
TheSubtleKnife 
Most things I seen said one day at a time. Or I will not drink today. And I thought if I had a husband who said I will not cheat on you today how would I feel. In comparison to I will never cheat on you. Its a rather powerful difference.
Yes! Yes! I couldn't have said it better myself if I tried.
Another good one is when a habitual drunk, temporarily on the wagon for the Nth time, says "I have no desire to drink." I then think "What are they saying, exactly? That the only reason they aren't drunk is because, presently, they have no desire? That as soon as that desire comes back (and it will), that they will get drunk?"
The reaction when I ask them this question is usually priceless, with a look on their face that says
"Uh-oh, they're on to me!" 
To use your analogy, we can imagine a husband who says to their wife "honey, I'm not cheating on you because I have no desire for sex."