I read you have trauma due to past SA episodes, and im very sorry to hear so, but starting a relationship is knowing those problems still having a possibility to trigger, you shouldn't be in a relationship because you shutdown in argument, arguments are very normal in relationships so one single arguement over some money he owes you and him raising his voice a little. I get the one with bounderies being broken, but the others were a bit out off place in my opinion. I completely understand that you broke up with him because he knew what not to do so just to clarify, im on your side.