Hi. I'm nervous to post about this. It's pretty complicated and I don't look the best in it.

To the point, my brothers wife cheated on him with a friend of ours. I found out through that friend over some drinks, and didn't know what to do exactly. He also told me my brother and his wife don't have much sex. My brother and his wife have a daughter, and I didn't want to ruin her family.

But I'm good friends with the wife, and my brother and I are obviously close. So I felt I had to do something, and that something was to talk to his wife about confessing to him about the affair. I figured it'd be better that way.

Either way, that's when she told me that she knew about my affair about three years ago. I have no idea how she found out, as she refused to tell me. But she threatened to tell everyone if I didn't drop the subject.

I'm not one to be blackmailed, and I'm smarter than that. I told everyone she cheated. And since I've been around them enough, I knew enough of her drama to spill some beans that made her look kinda bad.

She tried to tell everyone I cheated, in retaliation. I felt defensive, so I decided to spread a rumor about her catching an STD and not telling my brother. At that point everyone was so disgusted with her that I was in the clear. Nobody believed her.

Long story short, everyone cut her off and they're going through a divorce now. Its pretty ugly and things are growing more heated by the day.

But it's eating me up inside. I don't think I did anything too wrong. The fact that my brothers wife tried to blackmail me just passed me off so much that I may have gone overboard. Nobody talks to her, she's completely isolated in the divorce, and I believe she just got fired from her job for unrelated reasons.

Their daughter is taking it really hard too. I feel a little bad.

I nuked her before she could smear me. So I mean, AITAH?