Husband's ex narc best friend trying to get in contact

Forgive me if this is long winded. Im also writing this on mobile.

6-7 years ago my husband and his friendship with his narc best friend of 12 years blew up. An incredibly long story short, the NBF never liked me and was constantly trying to come in between our marriage. Husband and I went to marriage counseling and basically was told we needed to set boundaries with this dude.

Well NBF did not like that. He would call us, and just scream. He'd drive and park on our street and wait for my husband to come talk to him or to scream at me. He yelled at me that I "made him uncomfortable when he told SA jokes." At the time, my husband still wanted to make peace so we never sought out a restraining order.

The first few years, NBF would contact my husband every few months. We did try to reconcile once but that just turned into him screaming at both of us again. My husband told NBF to not contact us again unless husband initiated. I had a nightmare almost every night about him. NBF drove white cars so whenever Id see a white car in front of my house while driving down my street, id have a panic attack.

During that time NBF did the smear campaign to all of our mutual friends. From what ive gathered his main gripe was "he should be allowed to make those kinds of jokes" and a lot of friends thankfully saw how problematic that was. NBF apparently got so fed up with everyone that he moved to a completely different state a couple summers ago.

When he was gone I felt so at ease. I could breathe!!! The nightmares stopped. However, this past summer he moved back to the area. While NBF was out of state hen never contacted us, and my husband and I moved to the next town over so when I heard NBF had moved back I hadn't fully panicked yet since he had (and still hopefully has) no idea where we live.

Last week however, NBF got a mutual friend to try and get my husband to go to lunch with the 2 of them. My husband told the mutual friend he was always down to get lunch with him but he had no interest in hanging out with NBF ever again and asked the mutual friend to never try this nonsense again.

Here's why Im nervous. Mutual friend knows our new address. I could see him giving it to NBF. NBF clearly hates me and views me as the reason that he and my husband are no longer friends. NBF loves make SA jokes. NBF has screamed at me. Ive seen him scream at his wife out of no where. Ive seen the door NBF punched and kicked in when he was supposedly angry at his puppy. Im just afraid he might hurt me.

My husband has zero intention of letting NBF back into his life but he thinks I'm overreacting with my fear and thinks NBF is fairly harmless at this point. NBFs own siblings have posted startling things about NBFs behavior recently which leads me to believe NBF is more deranged than ever.

We have a ring camera and I've been taking some krav maga self defense classes since the spring. However, my dominant arm is currently in a split due to some cartilage issues so I feel even more vulnerable. Im currently in therapy to work on my anxiety around all of this. I dont know what Im looking for here. Advice? Similar stories? I feel like Im going insane.