Dear Carolyn:

I was recently at my parents’ house, and went to check my e-mail. When I opened the browser, I found that my father had not signed out of an e-mail account, which I did not know existed. I caught a look at the previews of the messages, and, from what I can tell, my father is having extramarital relationships. Now I don’t know what to do. Do I tell my mom? Do I tell my dad that I know? Please help.