In the (recent) past, I did something that really hurt a friend of mine emotionally. This was never my intention, it was something I did because I felt lonely, and even though I knew it was wrong, it made me feel a bit better about myself for a brief period of time. However, it went farther than I intended, and thus my friend wound up being hurt by my own stupid actions.

The friend, if you could still call them that, doesn't know that it was me. We've stopped talking for a different reason, so even though I'd like to apologize for it, I feel like that would just re-open old wounds, and hurt them even more with the additional information.

The guilt at hurting a friend and also the fear of being caught are driving me a little crazy. I know what I did was wrong, but I'd really like any advice you can offer. What would you do if you were in a similar situation? Would you confess to your friend and apologize for it, or just try and deal with the guilt?

(I'm sorry if this isn't the right place for the thread)