No of course not telling doesn't make a person bad or evil. I understand how hard it is to tell, I've been there myself although with a different issue.
There is a wonderful little book entitled, "Why Am I Afraid To Tell You Who I Am" by John Powell that, without being overly dramatic, saved my life many years ago.
This book brings home the reality that sharing who we are is much more for the benefit of the person who has a secret, than anyone else. The books description is, "Only when we face our fears can we learn to like ourselves and trust that others will accept us. This extraordinary book has changed countless lives."
Here's a preview:
http://www.barnesandnoble.com/sample/read/9780006281054
These are quotes from the book:
"I can only know that much of myself that I have had the courage to confide to you."
"I am afraid to tell you who I am, because if I tell you who I am, you may not like who I am, and it's all that I have."
"If I expose my nakedness as a person to you - Do not make me feel shame."
