WOW. I have seen documenteries on these type of relationships and the one thing many women refused to do was to relocate and stop ALL means of contact.
They try to stay in the same house, in the same state, and work at the same job. They try to file for divorce, child support, and bank transactions that only give the guy knowledge of how to find them.
So, concider this before things get out of hand and the guy become violent. Police investigations and restraining orders are helpful, but they only work for those who take heed with the law.