Oh, my-- you appear to have an N with extreme paranoid tendencies! How lovely. Maybe you should write back:
Dear person with TWO personality disorders:
Alas, you caught me. I have been monitoring everything you do, and everyone you associate with. Alas, it is not my fault. I was contacted by space aliens who find you to be FASCINATING and PERFECT in every way and they insisted I find out everything I could about you for them. They even want to know the names of people you spend time with.
There is something you can do. Their monitoring systems operate through electricity. So, just disconnect all of the electricity in your house. Also, they are able to send special messages to me through water, so you will need also to convert all of your plumbing to outdoor plumbing. They abhor outhouses, so I would build a few of those.
Also, in case you are wondering, we have discovered that Dennis is not really a person. He is a robot. He was created solely for the purpose of accompanying you to activities, because the Warlords realize that you are the supreme being of the universe and they want to know everything that you do without corrupting your activities with inferior human.
sincerely,
Person who is done with you, hooray
(Sorry-- I have known paranoid people and while it may not be politically correct it is very fun to make fun of them).
how soon can you be rid with this guy forever? Hang in there!
Vunil