^^^ true. I have no intentions ever of cheating. My brain wont let me do it, nor will I put myself in a situations where it could happen (example: drunk with bar sluts in my hot tub ia asking for trouble).
I will admit though, that if your girl doesn't keep you satisfied, the grass begins to look greener, so a small degree of onus is on the girl to maintain herself, just as we are all supposed to be doing here.