I need some help and maybe soft advice?

Hi guys, I've recently had some bad emotional moments with my twin. I don't usually do this on here because I believe in unique journey of each twin but I need to get it off my mind. I'll keep it as short as possible.

Lately my twin has been feeling down and kept saying "I want to d*e" so of course I got alarmed and started to be there, to listen, try to help so basically we broke our separation for this. We've known each other for few years now and it's been good, it's been bad but mostly lately it's been really good but our feelings sometimes get in the way and then we separate. Few times like that. Then we realize we can't stay apart and then all over again. Twin once said they would love to someday be with me but they are not ready yet and I accepted that, didn't mean I waited just kept the hope alive. So between those words about offing, twin said it's all my fault their life's gone to sh*t, for the problems in their relationship with partner, and also that there is no future with me. Which obviously made me so sad and hurt but I didn't return the bitter words as I tried to help, right. After a while I got tired of listening so I sent my hopes for the recovery and wishing them happiness, saying I won't be a burden anymore. I immediately blocked them without waiting for a response. Now I'm feeling guilty but I know I can't be a punching bag like that. I know it's ego talking cos rarely, but really rarely they start projecting the pain and selfishness on me and I know it's not really twin talking but that pain because we already discussed that ages ago, now I'm just too weak to fight. Do you think I made a mistake leaving?