Boyfriend (30m) and I (22m) were mugged. He sprinted off and left me alone with mugger. He claims he was running for help but I didn't hear from him for over an hour. Just wondering how bad I should blow up his shit?

Edit: sorry about title, I'm 22f!Tuesday night boyfriend and I were out, he parked in an alley because it's free. As we got to the car this tiny little homeless looking guy stepped out with a screwdriver and said something like "I'll I need is a hit, me $20 and no one gets hurt."Boyfriend sprinted away. He didn't Even look behind him so I was stuck with the mugger and since I had my phone only he rubbed his hands all over me while holding the screwdriver to my throat. He wasn't getting off on it but it was still so traumatizing as he thought I was hiding money in my bra and underwear. I kept hoping that Aiden would be coming back with the cops but nothing. The homeless guy eventually realized I had nothing and just left down the other end of the alley,I walked around the corner and less than a block away there was two police officers so I told them and all of the sudden downtown lit up and they were able to find the guy in less than 5 minutes.I rode with the police to the station to ID the guy. Maybe an hour later Aiden calls and said "I have the police are you ok?" I exploded on him telling him that I'm at the fucking police station and have been for an hour. He tried to tell me he was so scared he didn't know what to do and ran immediately to the police. I told him he was a liar because the two police I'd found had been there all night and he must have run past them. After some serious arguing he admitted that he'd gone to hide in a park about three blocks away. I was disgusted. And kept hiding when he heard all the sirens because he thought that meant I'd been stabbed or worse! What in the actual fuck?I told him to come pick me up and he said he couldn't because he doesn't like cops and is afraid they'd laugh at him. Well he was right because two very cool young cops gave me a ride home and they laughed and joked about him the entire way.Yesterday he finally called around noon and I told him don't bother were broken up. He then spent the next 8 hours texting me a combination of calling me names, begging me to come back to him, and explaining what he'd done had been the smartest thing for both of us. He said had he not run, his natural rage would have taken over and he would have killed the guy. Suuuuuuurreeee....My question is how scorched earth do I go in this breakup, let him have some dignity or do i blow up his shit?Tl;dr: boyfriend left me during a mugging. Do I ruin his life in rhe breakup process?Holy shit! Had no idea This would blow up! I'm in the lab all day so I'm just catching up at lunch. I'll try and respond I promise.edit 2: guys I'm floored by this response. I have almost 1700 unread messages in my inbox and feel like I missed out on the conversation when I was at my internship today. I honestly don't know what I am going to do. Haven't heard from Aiden since last night so I hope that means he got the fucking message. I don't know what I'm going to do as a day monitoring aluminum reactions has calmed me down a bit. not sure but this is my biggest reddit post ever, by a long shot via /r/relationship_advice http://bit.ly/2D1iAT4