"I personally doubt it was the laugh of an evil monster who intended to injure you."
Well....I think she went forward not caring if she hurt me or not, that I didn't deserve him. She didn't care who she hurt, including all the kids involved.
A full year before the physical affair started, I had her over to my house to find out why she was being so cold to me when we were all together - what I had done to her? At that point, I knew she was in an unhappy marriage (she often cried to the women in our circle, played a martyr, but would never take our advice to actually talk to her husband and try to make things better - just said "I can't" - you stop having sympathy for someone like that after a few years). I called her on having a crush on my husband. She cried and said I must think she was such a slut (had I only known). I said no, that we could all get along and hang out, etc., but she had to have appropriate boundaries regarding my husband. I am an idiot. She told a friend's sister that she was in love with him (was acting like a high school girl with a crush), and that she would do anything to have him. Also said that he deserved so much better than me.
Yep, I take it that she attacked me, my marriage and my family.
And yes, he was an idiotic moron to fall for it, to get swept up by something more exciting outside of his stable, predictable, long-term marriage.
I really have serious doubts that he was in all that much pain...instead, I think he just got excited at the prospect of something new (especially since he had never been with anyone else). Boredom, complacency - but misery?