hi Artemesia and

im very sorry for the circumstances that brought you here, but i am glad you found us. we know how volatile these relationships can be, and the total confusion and "what do i do now?" after a breakup.
a lot of the advice on this board centers around not making the situation worse. it sounds like youre approaching this thoughtfully and carefully, and not sabotaging yourself or the state of your relationship. that will help.
when things kind of explode like this, its usually a good recipe for both parties to take some space for themselves, let emotions unwind and get back to baseline. are you thinking of reaching out at some point if he doesnt?
it sounds like youve got a pretty good working knowledge so far, i recommend you keep building on that. start with the lessons and tools directly to the right of the board. our article on "what it takes to make it" is a good big picture article:
https://bpdfamily.com/content/what-does-it-take-be-relationshipand the thing is, you dont need to know exactly what you want to do right now. knowledge is power, and even if you dont reunite, these are skills that work with everyone, that you can take into future relationships, and theyll help you navigate if there is communication difficulty with him in the future.
lastly, i hope youre not kicking yourself too hard. you handled his needling and a pretty stressful moment with a pretty cool head - ive heard far worse than screaming "shut up and get out", for what its worth. it also doesnt mean that the self inquiry and work that you did before this relationship is wasted. i too had a history of rocky relationships, was single for three years, then met my ex. in a lot of ways, i was a better and healthier partner. i suspect that you were too.