Who benefits from me not cheating?

I had took a break from my love due to the following reasons described by someone else:
... there was the struggle with accepting that my behavior was not aligned with my deeply ingrained self-image. There was a heavy cognitive dissonance between my actions and my stated values. I came face to face with the reality of being capable of doing something I abhorred and repeating it again and again. I struggled with my baser nature… and lost. That takes a toll on your self-identity. It is pretty demoralizing to have people respect you for your character and integrity and know your skeletons are performing a ballet in the closet. Then it was hard to stand in front of the people affected by my (our) behavior and accept their condemnation, knowing that it was deserved. And it is hard to look back at some of our sweetest memories from the beginning because they are tainted by the circumstances. And it was hard to stay together while she grappled with the guilt of her actions and with letting go of someone she loved for so long. That was really hard to watch. So, you can see that each step along the way had its own version of Hell.
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It had been a few weeks that our relationships are purely businesslike.
I am slowly dying inside and can't stand my life. Keep losing weight though...50lb down now.
He doesn't look good either, haven't seen smile on his face for days.

And now I am thinking who benefits from all of this?
And how to survive all above written by a man who actually got his love
where he wanted to. However he said he wouldn't have a strength to do it again.
But he fought for his happiness and they both are ok right now.
I am pretty sure we both are going to just be miserable thinking what if.
Because we aren't that brave. Something drastic must happen for something to change.
So where is the truth to what's right?