a BL series i've read with this trope is Omega Complex, and it's smut if that's what you're looking for. it's kind of short, but pretty good
ouu wait i should've given a link. also take the recommendation with a grain of salt bc i read it a whileeee back, i'm sorry if you don't like it akdjakjdaj
https://www.mangago.zone/read-manga/omega_complex_1/
Enjoy
Be sure to click on the plus to see the yaoi link
Our relationship is...
Gradually closer to the heart
Flawless
Also tonari no stella
Childhood friend complex
hello guys can you recommend me a childhood friend to lovers its ok whether it's straight or bl ⁄(⁄ ⁄·⁄ω⁄·⁄ ⁄)⁄