I agreee with what everyone eleas is saying.. and if that does not work.. Call the cops.. Honey you can not go on like this.. If he has cased you grief in the past He will not stop this time either..
Stay away from him.. Leave him be.. Yes he may have mental problems, but he is only trying to get to you again..
You are our top concern here not him..
(((((((((((((((( hugs ))))))))))))))))))))))
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take time to heal thyself before trying to help others, or you will never get better