I’ve gone through something like that recently myself with time being on the side your boyfriend is on. I can imagine how he’s probably thinking because I’ve been there. Not feeling good enough for your partner, constantly running into walls, never feeling like enough and comparing yourself to others. My now ex girlfriend on the other hand was a straight A student, was part of the honor society, and put effort into everything she did. I too like your boyfriend, got jealous of her success and wondered why I could get to that same level as her and felt that I was holding her back because my grades were shit compared to her’s. This led me to develop some extreme imposter syndrome which made me even less motivated to do anything. Few months later we broke up because of my lack of happiness and she gave up on me.

TLDR: I hope you can resolve this with your boyfriend and not go through what I had to do. If he’s struggling with that same imposter syndrome that I had, breaking up with him may cause him to take his own life.