Redrose

SL
https://www.mangago.me/read-manga/can_t_see_can_t_hear_but_love/
https://www.mangago.me/read-manga/watashitachi_no_shiawase_na_jikan/
https://www.mangago.me/read-manga/orange_takano_ichigo/
https://www.mangago.me/read-manga/oneichan_to_issho/
https://www.mangago.me/read-manga/sarashi_asobi/
https://www.mangago.me/read-manga/will_you_marry_me_again_if_you_are_reborn/

GL
https://www.mangago.me/read-manga/my_broken_mariko/
https://www.mangago.me/read-manga/a_lollipop_or_a_bullet/

BL
https://www.mangago.me/read-manga/birthday/
https://www.mangago.me/read-manga/yakuza_wo_shibatte_ii_desu_ka/
https://www.mangago.me/read-manga/nichijou_climax/
https://www.mangago.me/read-manga/life_senjou_no_bokura/
https://www.mangago.me/read-manga/castle_mango/

Non romance
https://www.mangago.me/read-manga/koukai_no_nai_jinsei_wo/
https://www.mangago.me/read-manga/shiawase_wo_anata_ni/
[ Just basically read all avogado6’s works, they’re all so good, beautifully tragic, and meaningful at the same time, link here: https://www.mangago.me/r/l_search/?name=avogado6]
https://www.mangago.me/read-manga/sea_foam/
https://www.mangago.me/read-manga/rental_onii_chan/
https://www.mangago.me/read-manga/one_armed_amy/
https://www.mangago.me/read-manga/the_horizon/
https://www.mangago.me/read-manga/chichi_kogusa/
https://www.mangago.me/read-manga/homeless/

Here’s a bunch of them dear, I hope you enjoy

Lemme give you a warning, theese can make a grown man cry-

https://www.mangago.me/read-manga/my_wife_whom_i_loved_dearly/
https://www.mangago.me/read-manga/the_bride_of_god/ (Yaoi)
https://www.mangago.me/read-manga/sea_foam/

https://www.mangago.me/read-manga/my_dazzling_ex_husband/
i havent read it yet so i cant say if its good or bad but its sound pretty much like what you described