DEAR ABBY: "Lisa" and I have been best friends since high school. We even liked the same guy for a while. (I'll call him Bill.) Eventually, Lisa married Bill and I married someone else. I didn't see Lisa for several years, then one night I ran into Bill and he told me that their marriage was over, but Lisa wouldn't get a divorce because of how it would look to her family.
Not long after that, Bill and I had a one-night stand. We both felt so guilty, it never happened again. Then three months later, I saw the two of them together, and Bill couldn't look me in the eye.
Meanwhile, Lisa and I have become very close friends again, and every time we get on the subject of married people who cheat on each other, I want to tell her about Bill. I know if I tell her, I will lose her as a friend, but on the other hand, I wonder if I am being a good friend by not telling her. I'm willing to tell her, if she would just ask. Sometimes when we talk, I say something like, "I'd want to know if MY husband was cheating on ME," hoping she'll say, "So would I," but so far she hasn't.
I don't know what to do. I probably should tell her before someone else does. -- LAURA'S FRIEND
DEAR "FRIEND": With friends like you, Lisa doesn't need any enemies. Are you sure you wouldn't like Lisa to end her marriage so you could have Bill? Please do Lisa, Bill and yourself a favor and don't tell Lisa (or anyone else) about your one-night stand with Bill.