Am I being stalked online and in real life?

[luna]

For awhile now, I have had issues with this guy, I'm not giving names, so I will identify them as Person A, B, etc. Person A had been harassing me for 2 years now, he seems to be giving my name out to his friends. He was giving out an email address of mine for awhile, until I had stopped replying to Person B, who was interrogating me for him. I blocked them both from emailing me, as well as blocking them on Facebook. As of recently, His friends, circle, whatever, was contacting a friend of mine that I have on Facebook. How does he know that I am friends with this person if I have had him blocked for a long time? Is he using some program, or does he know somebody with a connection to me, and finding out who I converse with? My friend has been asking me if I know such-and-such person, I tell her either I do, or I don't if I really don't. Example, Someone wanted to add me on Facebook a few months ago, I declined because we had no mutual friends. Last night, my friend told me that this person contacted her. How does he know I am friends with her if I never accepted his friend request? Is Person A giving away my Facebook to his friends? Any kind of insight would very highly appreciated.

I have two of my best friends on Facebook that I have no other way of contacting because one lives in Britain, and the other does not text often, I really don't want to delete my Facebook account for this reason. What should I do?

I need some insight as to if this is just childish games, or if this situation is getting serious and I need to involve the authorities.

Thanks.

[Captin]

make your facebook account private and ask your friend to make hers private too, that way no one can find either of you and they cant look at your profile until they add you , try to go by codenames instead of real life names. If you havent edited your settings on facebook anyone can view your mutual friends. pictures, etc .