YucK! I know someone that got caught in bed with her husband's nephew. He was 16, she was 30. Needless to say, it caused a divorce, but the happy couple didn't last. She's lucky she didn't get put in jail.
This is like borderline incest. I say, if you are religious, talk to your minister. This is a MLC of almost Biblical proportions. Most ministers are often very good counselors, and what is said is kept in confidence. At the very least, he may be able to put a spin on it that you haven't thought of before, and make your decision to out/not out more clear.
