Please Help Me! 💔

My boyfriend and I have been fighting big time the last few days, first it was something he did and now it's something I did and he's wanting to calm down before we talk but the just sitting here and waiting in his house when everything reminds me of him and everything around me makes me think about how much it would hurt to lose him and I don't want to lose him I truly don't but the sitting here and waiting in silence when he's just across the room, so close but not even trying to talk or hold a conversation? 

It's torture for me, and when we were fighting I told him I would stay the night at my grandparents empty house to let him cool off and he tells me the worst thing I could do with a person like him is leave but I can't just sit here and endure this pain anymore. It's making me want to just cut ties and run even though if I left him I'd never try again with someone else due to my PTSD and the pains and humiliation that came with working through it with him. I just won't do it again for my own sanity but right now?? It just hurts to much to be here. 

I'm about to just walk to my grandparents house and let him take my car. I just want to have some me time and give him the space he needs cause I know if I stay like this here continuing to do everything he wants I'm just going to go crazy until he finally wants to talk.

 He hugged me yesterday and told me that we were gonna have some serious talks in the next days and I thought that and him and I fooling around in the shower meant that he wasn't angry anymore and that we were finally going to talk but no.. he's still angry. 

 Makes me feel like he just wanted a fucking blow job. So Should I put my foot down and tell him that I don't want to leave him I'm not going to leave him but I need space for both of us, for my sanity and for you to calm down and you can come get me when you're ready or should I just sit and wait it out? Torture as it is?