Daddy5677 kept on following me and Vikingfruit and then he annoyed us so badly that we left our awesome house and went elsewhere and built another one he thought he lived with us or something

Looks like you guys have yourself an adoring fan

...

I'm sorry to hear this, but the one thing you shouldn't be doing is flaming someone on the post. Make a pe or contact a mod and explain whats going on keeping everything private my friend.

5 - Don't be annoying on purpose.

This includes, but is not limited to:

Do not troll.

Do not spam chat.

Do not type in caps.

Do not harass other players

If someone asks you to leave their place, leave.

Do not beg admins for anything.

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Did you ask him to leave your place or to stop following you?

I really cannot see anything that can be done except really you guys try to just ignore him. If he starts picking up your drops, or getting in the way of you placing blocks, then yes, please by all means alert a mod.

You can lock your doors. You can lock your chests. You can ignore people in chat. It's really about willpower at the moment from what I can see.