Help - please

'm a newbie at this and I've logged on and off this site trying to put together the right words asking for help or for advice. I guess it seems like a simple question - but how do you help your boyfriend/girlfriend or partner cope with their depression? My boyfriend and I have been together for a year but he's depression is worsening. To the point of self harm and isn't ashamed to admit that he can commit suicide to prove to those who don't think he can 😪😭 (which was just yesterday. Worst experience I've been through) . It also seems like we clash heads constantly and he doesn't want to hear certain things that I have to say, he just wants to hear what he wants to. I don't know.. It gets to a point where it becomes draining physically and mentally - for the both of us.I feel stuck and I have no say. So Is it wrong to just do what he says rather than compromise?