I was going to tell you to go get yourself banned on another board but figured that would definitely get you in trouble here. I figured this is safe because you aren't actually causing trouble on that board in any way.
humm, worst thing I ever did to anybody was to myself. But I realize that that's not what you were asking...
when your in addiction, pretty much anything is fair game, I stole, lied, and cheated my family out of many things. The really sad part is they knew and didn't know how to help me, or yet, couldn't help me.... truth? doesn't get any truer than that. I haven't actually been to hell, but you could damn sure see it from where I was....
I was part of a Postcard Campaign of Terror with two others on here that led to a non EF couple's divorce IRL.
On my own... probably when I did not return a very valueable ($$ and sentimental) piece of jewelry to my ex while we were together. To this day it is consider "lost" although he is 99.999999999% sure that I have it. Which I do.