Consult your lawyer. I've attended a few sexual harassment training's over the years. There are no clear cut rules. In fact, in my first training, harassment c

Consult your lawyer. I've attended a few sexual harassment training's over the years. There are no clear cut rules. In fact, in my first training, harassment couldn't occur until the other sex said "stop, no, etc." In the last one I attended, things aren't so clear cut, and it seems like the lawyers have made sexual harassment so unclear that the only ones who can determine it are the lawyers themselves. It doesn't matter that it was after work, using a non-work communication medium. It still could be or maybe its not harassment. You are going to have to talk with her and let her know that you have to act upon this. You don't know what is going to happen. At a bare minimum, something is going to his HR file. At worse, a lawsuit is going to happen.