
https://www.mangago.zone/read-manga/murderer_llewellyn_s_enchanting_dinner_invitation/
idk if it's gonna fulfill your criteria or not but the ml really longing for his partner and he's always loving him since day one. their relationship is mutual and they would get happy ending

mutual pining ever since they were kids ts so sad https://www.mangago.zone/read-manga/sangyang_the_wanderer/
same situation as the first
https://www.mangago.zone/read-manga/beauty_and_the_west_chamber/
much fluffier than the first two https://www.mangago.zone/read-manga/dekoboko_sugar_days/
soooo fluffy holy shit
https://www.mangago.zone/read-manga/kisses_x_kiss_x_kisses/
literally the definition of yearning
https://www.mangago.zone/read-manga/reunion/
BL manwha recs with longing, yearning, pining any type mutual or one sided IDCCC GIVE ME THOSE CRUSHES