Son compartido

I’m 19f. My parents died in my childhood. I don’t have friends, or a support system, or family, or anything else. I don’t have people from my past that will help me. I have a shitty part-time job, and “our” car is in my boyfriend’s(23m) name legally, so i don’t even have that. We’ve been together a year now, and now it’s starting to rapidly go downhill. We have arguments that can arise from anything. Our most recent arguments have been about a joke said in the wrong tone, a single sentence aski