interesting, thoughtful post sky
and the answer to your question, at least in my experience, it does take some self-control...but by both party.
My ex cheated on me....I never cheated on her and I have enough faith in myself to think I never would have. That is something that just should not happen in a marriage but I know it does everyday, so I am not naive.
If your ex used that line on you.....I would laugh too.
I did continue the choice/genetic post on the other thread though. But only cause I like being next to Paddy.....the sexy little leprachaun (I think I spelled this word a different time each time I wrote it)