Mentally abusive Ex stuck to my shoe.

Hey all. I'm just reaching out for support and advice. So long story short my ex boyfriend was always mentally abusive. I was an idiot and dated him for almost four years. I was done long before the break up and we were fighting more. It's been about six months or more since I actually broke it off.

Initially I felt bad and talked to him as a friend after the fact because he had went through a lot such as getting discharged from the Marines etc. He was an angry mess. I tried to help but he just wouldn't quit spending all his money like crazy and wouldn't get a job along other things. He was just living off his aunt.

A few months after I met a new guy ( month or two after the break up ) I started to date this new guy. So after a few weeks I let my ex know, I also let him know he shouldn't talk to me as much out of respect for the fact I now had a guy friend and he wouldn't be allowed to hit on me or reminisce about the past ( one sided keep in mind )

I've been with this new guy for months and we really like each other. Things are going great. Although about a month in and my ex began harassing me and making threats. I tried to calm him and encourage him to leave me alone because I wouldn't allow him to treat me like that. He wouldn't stop, It got worse. My boyfriend and I talked about it and it alarmed him. He talked to my ex calmly about leaving me alone and encouraged my ex to get help. My ex didn't. He is still harassing me, it's gotten worse. I have him blocked on everything yet he makes a new number and harasses me. It got to the point I was afraid to be in the house alone. He stopped after I said I was going to take legal action. Well not completely but mostly. I feel like he's just stewing in his hate for me being happy. He says he's going to make me suffer. Things have been quiet for a couple weeks... should I still be afraid?

Thanks for reading...