This one is not too bad, it has a second part that’s ongoing that actually has their relationship but this one is where it starts but they don’t really become a couple yet. (They’re both in love with one guy but I don’t think they like each other but it might bring it up in the second part) Sorry I wasn’t much help but I hope you like it :)
https://www.mangago.me/read-manga/confession_2/
https://www.mangago.me/read-manga/goukaku_no_tame_no_yasashii_sankaku_kankei_nyuumon/
https://www.mangago.me/read-manga/i_wanna_die_before_i_m_30/
you should also read “boyfriends” on webtoon it’s soo cuteee !!
does anyone know any poly relationship manga/manwha?(づ￣ ³￣)づ