NEED BROTHER'S BESTFRIEND TROPE BOOKS

Ok, hear me out before asking me to check the MEGATHREAD😭 I know there is a Megathread for every trope out there but no book in there is hitting me up.

I am looking for a Brother's Bestfriend trope where we have moments from CHILDHOOD. They must have a bond that must be purely platonic/special from MMC since he's older and hopeless crush from FMC. They can be separated due to external reason and meet after years ( To love Jason Thorn) or MMC suddenly realizing his feelings are just brotherly but love after years.

I am not looking for the typical "take my v card" trope into this. Unless its very well written (Beautiful Player)

Basically, i need the MMC to pine after her since forever. I looked over all the lists from goodreads,romanceio, searched this whole sub and yet found none that i am looking😭I trust the sub's power to give me a book.

TL;DR: Need a Brother's bestfriend book with Childhood moments too.