if mutuall understanding isnt present then its gonna deteriorate over time, stress causes u to feel less joy from thigs thats why u lost the spark, i dont think its worth it to go in a relationship when you are young and have issues, the reality is that even adults have trouble with understanding, led alone teenagers, and if he has problems of his own its gonna be difficult for you or for him to change quickly. If nothing is changin even after honest communication, and everything just repets, just leave, dragging it long term will result in more pain. In theory u could go to couples therapy, but its expensive and idk if u or him are willing to try it long term, that being said, if you know u have trauma please go to therapy, otherwise its gonna ruin relationships even if your intentions are good.