Were someone to ignore their issues or hide them from their partner, I would claim it destroys the relationship more than anything else. But admitting one's flaws? As much as you may judge someone for a lack of self-control, you have a respect the honesty it takes to admit to your S.O. that you lack that self control.

Even moreso, it's a very strong indication of your commitment to the other person when, after admitting your lack of self-control, you consciously choose not to put yourself in those situations because you know how much it would hurt your S.O.

tl;dr; - A relationship where both parties are honest with each other and ok with the situation after being fully informed is the strongest possible relationship.

We both entered into this relationship with a full understanding of our proclivities. I knew that he couldn't stand to see me with another man; he knew that I have the impulse control of flea. Marriage isn't about being perfect for each other, it's about making a commitment to make it work. This is how we make it work.

This is just like using StayFocusd or maxvisit; you know you don't have the willpower, so you use other means to keep yourself productive (or faithful, in this case.)

I think it's good to recognize that every relationship has limits. It's incredibly idealistic/naive to assume otherwise (I wish life worked that way though).