Man, you got me thinking now. I wasn't cheating on my partner, I was cheating with a married man who had a monogamous commitment to his wife. I don't feel guilty about fucking him, he was an idiot. I feel super guilty about hurting his wife. Ya, maybe her choices contributed to his choice to step out, but that doesn't justify my part in it. Two wrongs don't make a right, and all that business. I've come a long way, I no longer hate myself for hurting a sister. But I did for a very very long time.