first break up

My boyfriend just broke up with me while we were in a serious long distance relationship and i don’t think it was the distance that tore us apart we were amazing at communicating and we often talked about how healthy of a relationship we had. all of a sudden he says he needs personal space to grow and doesn’t think he can be a good boyfriend to me and can’t commit himself to a relationship atm. i understand he’s in his first year of college and things are tricky but no matter how many times he explains how he feels to me i don’t understand. he is happy and living which is good for him but i’m broken and no one seems to care. he seems so okay and like he’s moved on from a serious relationship in less than a week. idk how to move on. everywhere i see people say to focus on the reasons why i wanted to break up but that’s the thing, i never wanted to break up. any advice to mend my heart? i don’t want to be consumed with sadness and rage.