Desperate for help

So my boyfriend is really depressed right now he has a history of self harm but he kind of got out of that, his family is really harsh on him, they always put him down and make him feel low, basically verbal mental and physical abuse. The past few months hes been talking about death lately (he usually hates death and blood). A few night ago we talked about general stuff and out of the blue he replied "i feel like walking out into the street". I tried talking to him mother about his problem but she just brushed it off like its nothing. All i know to do is tell him i love him n try to help him through this without losing him. Ive tried telling his mom to take him to therapy but she constantly says he doesn't need it or they don't have money(mind u they eat out to restaurants every weekend)...i just don't know what to do anymore