I just want my life back

Ok so pretty much i’ve fallen for a boy in the last 10 months and its gotten to the point where he is my only source of happiness. We talk nonstop 24/7 and I drop everything to talk to him whenever he texts me. We’ve gotten so close in the past few months and i really really want to be with him but he thinks of us as just friends. I’m the first person who’s ever really understood him but the more we talk the more my feelings grow for him but the more he just sees us as best friends. It sucks but I cant leave because I care so much about him and i know if I leave he will feel so bad about himself. I cant talk to him about this because then our friendship is over too because it would just be awkward right now im at a point of just complete exhaustion tho my entire personality has drained and everyone else in my life has slowly faded away. Its like he’s the only person in my life these days and im constantly overthinking everything with him and I cant ignore him bc he texts me 24/7 again. I was a happy extroverted person before I met him but now im just sad and hurt all the time.