is breaking up with my (18f) boyfriend (19m) of 3 years the right thing to do?

i’ve been with my boyfriend since we were 15 and 16, and he’s a great boyfriend. of course we’ve had issues before but he’s always reassuring, caring, patient, and constantly trying to improve himself for me and i love him very much

but as i’ve gotten older i’ve realized that i want a partner who has more in common with me and i who i can have deeper conversations with, and he isn’t the person for that. the best way i would describe it is that he’s an amazing romantic+sexual partner, but if you take that away i don’t think we have a good friendship beneath all that bc we’re so different

i’ve talked to him about this as well and he’s said he’ll try to change and be the person who i can have deeper conversations with but if the roles were reversed i’m not sure that would be a reasonable thing for him to ask of me.

i know we’re young so breaking up might be the reasonable response to this situation, it’s possible we’re just not compatible and at the risk of feeling lonely this might be the next step. but it’s hard because i genuinely love him so much, and as unrealistic as it may sound it doesn’t seem like i could ever find someone like him again

he would never call me out on it but i feel like i’m also projecting these worries into him in a way i don’t think he deserves

should we break up? and if so how do i go about it? or is there a way to save our relationship?