Guilty of sending anonymous love letters?

I am sending anonymous love letters to his home in the mail to a guy I know from my workplace. We live in California, the issue is he is showing them to co workers at our office. I been doing it for a month now. Also another issue is that at I can barely talk to him at all because I am guilty of something that will get me fired/he will quit and possibly have charges for harassment from police. I want to talk to him more, but in the back of my mind I cannot because I know I am doing something wrong. Plus he is in a relationship. I do not know what to do. When I see him I just want to talk to him, but I just stay quiet or walk the other way. In the notes I said some serious stuff and very deep stuff that I know he is already freaked out with. I feel so humiliated even he doesn't know who I am. Another thing too is that I know everyone is talking about it and he is showing it to everyone in the office, I don't know if the manager knows about it.
Guilty of sending anonymous love letters?
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