Self-harm...

My boyfriend of 3 years just saw some of my recent, fresh cuts because it's 100° and I was wearing long sleeves/a jacket and he was really upset. He said he was more upset at my family for not caring about me or finding me help, but he still seemed very confused and mad at me. Now he's been avoiding me, sitting on his phone all day and when I ask him what's wrong he says NOTHING and gets mad at me for asking...what do I do? I hadn't self-harmed for 3 1/2 years and I relapsed because of a death in the family. I know cutting is stupid and dangerous but I've heard it all before. Please just answer my question of what to do about my boyfriend. Thanks ❤️