Recommendations

http://www.mangago.zone/read-manga/haru_wo_daite_ita/ classic one, yaoi, they're deep in love

http://www.mangago.zone/read-manga/koori_no_mamono_no_monogatari/
http://www.mangago.zone/read-manga/silver_diamond/
both are shounen ai from the same author and similar length; they're not really romantic with kisses and such but the leads are devoted to each other nonetheless, with their trust and connectedness reaching frightening degrees sometimes ... but in a good, interesting way (i think). i'd prefer the latter of these two, it's more interesting and slightly deeper to me :D

http://www.mangago.zone/read-manga/takaramono_wa_hako_no_naka/ deep, decade + long relationship and - SPOILER - we even get a role reversal once (=・ω・=)

http://www.mangago.zone/read-manga/puchi_puri/
decade + (i think) long relationship from when they were a highschooler and an elementary kid; it's kinda borderline but - SPOILER - we fortunately don't get to see any shota stuff in there, it happens when they're both grown up. friggin* cute (≧∀≦) and they're really devoted to each other

http://www.mangago.zone/home/mangalist/73850/ this might help

Thank you very much. It seems interesting.

Thank you very much! (๑•ㅂ•)و✧