Ugh I went back and it didn't go well

Last night I ended it after reconciling for 3-4 months.  He had broken up with me impulsively because I raised a continuing concern in the relationship.  I've always attributed his conflict behaviors (gaslighting, blame shifting, defensiveness, contempt, stonewalling) to RSD but have never been clear on if that's what it is or he just a narcissistic person.

Anyway, he was stonewalling after a blowout and I texted him that our relationship is toxic and I want to release us both.  He read some of it and then I'm pretty sure blocked me.

So I'm just going to push through the pain, I just needed to share.  I know this cycle has to stop and I have to stick with it. I felt strong in the past but it's hard to break the attachment.  It helps to remind myself of what the issues are.   We are majorly incompatible.