I need advice

My boyfriend, has had this meth problem, and I told him before we even got together that I don’t like drugs because they’ve always been apart of my life (not mine specifically, but like my brothers, my dads; my moms, ex, etc) he was supposed to quit, he told me he could quit cold turkey, and I believed him, then He got into a car accident and Then bills Came and he did it again, and Our relationship was just arguments back and forth because of it, then he stopped, we didn’t fight much then Yesterday he picked me up after a week of not seeing each other due to family issues of my own, and he fought with me immediately, and then he admitted he’s not an honest guy and if he could break up with me and me not be sad he would because he wants to do meth, and I stop him, and He was crying and saying how he’s gonna lie to me and Do it again, and that he doesn’t want me to get hurt but I already am getting hurt and he doesn’t seem to care