Question

I am 47 yrs. old. I recently moved downstairs in a extra bedroom from a friend of mine who is 73.Just friends, never any sexual relations. I was living with someone at time. I had been through a very stressful divorce a year earlier. I really loved my boyfriend but I felt I needed some time to think and get feeling better about myself, and the 73 year old told me I could come and go as I pleased. That changed quick. He became very overbearing. He was becoming so controlling. He started asking me to marry him, and I would tell him NO. At first I thought he was picking then I soon realizes he was not.Pressuring me constantly. He refused to hear or listen to anything I said. I ended up leaving and I am back with my boyfriend.Now he harrasses me and my boyfriend constantly. I have 21 harrassing messages,countless letters, e-mails,threathening us. Has been documented with police.No chages filed.He's very vindictive.He needs more than a slap on his wrist. He won't stop.What can we do??