Jeeper, I can't tell you what to do, but I can share my experience of having been in the same situation. Perhaps my story will help you decide what to do for yourself. My D-day was last summer. W didn't seem to have any intentions of telling anyone about the A. I struggled with whether or not to tell OMW, the minister of the church where she met OM, and especially my ILs. On one hand, I felt they all deserved to know. On the other, I didn't want to be the "bad guy" and have W hate me for ruining her secret.<p>Less than a month after D-day, OMW found out on her own. She called W and gave her an earful. Then she called the minister and told her. This was a horrible experience for W, but she could not blame me for any of it, because I wasn't involved at all. So I was glad I hadn't told OMW or the minister.<p>As for her parents: my MIL told W last summer that she'd lose all respect for W if she ever found out that W was having an A. That hurt, since W was already having an A at the time this was said. I never thought that MIL really meant what she said, but I didn't want to take that chance. So I didn't tell her or any of my other ILs. This got more and more difficult as W's emotional health deteriorated. I came to realize that she needed her parents' love and support more than ever. Instead of calling my ILs, I urged W to talk with them and to let them help her. I figured they'd eventually figure out for themselves what was going on.<p>A couple of weeks ago W told me that both of her parents know about the A. She said that they both got more and more suspicious, and the truth finally came out over the holidays when she spent a week with her mother. Once again W has had to face the consequences of her decisions, and there's no way she can twist things around to blame me for any of it. MIL called me yesterday and commended me for being W's friend when I have every reason to just turn my back. So once again, I think I made the right choice by not telling.<p>I guess it sounds like I'm advising you not to tell. Truth is, I think you need to evaluate your situation and decide for yourself. I can tell you that in my case I didn't tell, and right now I'm glad. I would, however, advise you to encourage your W to seek support from her parents. If her mental/emotional health gets anywhere near as bad as my W's has, she will need her parents more than ever.<p>Whatever you decide to do, I think your W is lucky to have someone who cares as much as you seem to. Good luck, and please let us know what you decide and how it works out for you.<p>BP