How do I help him?

I just really need advice sorry it's long!
Okay so for context me and my boyfriend have been together for almost a year now we live kinda far from each other so I can't just go see him whenever but he's amazing and it's really the best relationship I've ever had because I know he loves me for me not my body I've never had that before and I love him so much but my boyfriend is depressed which I knew already so that's nothing new but when he's feeling at his worse he talks to me less I've noticed he says is because he doesn't wanna put down he wants me to be happy and not depressed bc he's depressed but that only worries me bc because I know that he's suicidal there was 3 separate occasions where he told me he was possibly going to kill himself but I don't know if he's actually attempted to or not and yesterday he literally said he said he feels like he's losing himself again and he told me to have a good rest of my day and I was asking him if he was okay he looked at it last night but he didn't reply and I haven't talked them today yet I really miss him right now I just worry about him. And then he'll apologize for not talking to me but it's like why are you apologizing for being depressed and I don't know what to do cuz I don't want to force him to talk about something he probably doesn't want to talk about but also I just want to make sure he's okay I don't want to lose him. I've asked him about getting help before he said he didn't need it and I can't force him to so. I don't even know how I can help him or if I can help him when he won't talk about it and I've been crying I just don't know what to do.
How do I help him?
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