first you need to report to the police that this is happening through them you will be able to get a resraining order that states he cannot come with 500 feet of you and/or where you live. Once the order is issued neither one of you can come within 500 feet of each other - he can be arrested and your doing so invalidates the order in some states you violating your own restraining order can result in your arrest so be sure the police explain the terns and so on completely to you before you sign and go before the judge who will sign it. Then the police will serve it to him making it clear to him if he violates it and you call to have it enforced he WILL be arrested. I would also suggest that the very first time he violates it (and most do just to see if the person will follow through with having it enforced) you have it enforced. otherwise the harrassment and so on could get worse because he he will know you won't enforce it if you dont the first time. Domestic violence agencies can and most likely will help support you through the process of reporting and getting the order.