Hmmmm off the top of my head? Last story I re read similar to that was “Omega Complex”.
Outside of that tho, “at end of the road” is pretty good. However that only falls under “childhood friends”/unrequited love. MC doesn’t fall for ML until further into the story. It’s also a soul transfer story. ML loved MC but then MC died (At the beginning btw) and got his soul swapped with another persons. ML eventually realizes that during the story.
unrequited but they both like each other ₍ᐢ. .ᐢ₎ ₊˚⊹♡
https://www.mangago.me/read-manga/why_are_you_so_kind_to_everyone_except_me/
https://www.mangago.me/read-manga/love_order_1/
high school first love exes ₍ᐢ. .ᐢ₎ ₊˚⊹♡
https://www.mangago.me/read-manga/zero_centimeter/
Unrequited love but bath like each other:
https://www.mangago.me/read-manga/yasashii_pantsu_no_nugasekata/

With childhood lovers or unrequited love but they both like each other ?
I have read salt society, the mask of the demon, and mind the gap.
Anybody has any similar bl recommendations ?