Hi
Eight months is the time when a person takes off the mask of best behavior, and now the real personality is coming out. You said that misunderstandings “blow up”.
Brother, if there is a world-shaking fight over a small matter, then it is not communication but “ego war”.
A healthy relationship does not mean that there is no fighting, but how the fight is solved. If, after every fight, you just say “sorry” and move on without solving the problem, then you are sitting on a pressure cooker.
You should have a serious meeting instead of being passive-aggressive. If the matter still blows up, then understand that it is less “healthy” and more “headache”.