Abusive Partner Threatens Suicide

Honestly from what I've read here and in your other posts, he isn't ready to be in a relationship. This is all manipulative behavior that is incredibly destructive to relationships and you need to learn when to walk away from people who treat you this way, you're worth more than that even if you dont believe it. Everyone is. Threatening to kill themselves is a very common and almost never real threat that abusers use to keep you trapped, it's also incredibly effective because the guilt and love you feel for the person can cloud your judgment even if you know to look for it. I spent my whole life being told that this is why I was abused so long as a child, because my stepfather kept threatening to kill himself when my mom tried to leave, and I still fell for it with my ex. Going to someone you're dating when you find out they want to break up and telling them that you understand if that's what they want doesnt make it so he cant discuss his feeling about it to tell you why and see if there's any way to compromise. He could have rationally discussed his reasons for wanting to break up when you brought it up, talked to you about these issues BEFORE going to other people to talk about breaking up with you, or even just said that he just wanted to do something differently without breaking up but didnt think it through when he told his friend. Instead he chose to emotionally manipulate you, hurt you, and blame you for a rational decision you made based on his actions. If you attempt to break up with him and he tries this again say "okay i will be informing your [trusted loved one(s) and/or 911] to keep you safe, I dont care if you don't want me to you clearly aren't in your right mind and need help, but we are still breaking up." He likely won't make an attempt but if he does you've done all you can to help him without taking back the break up and putting yourself in a dangerous position. It feels better to do that than to keep the relationship alive long enough that he hurts you to the point that you break it off because you dont actually care if he attempts or that it gets to the point that you attempt, there is a breaking point with it and getting there is traumatic and hard for everyone to cope with. His actions are his responsibility.