These are all GLs:
https://www.mangago.zone/read-manga/composing_spring_in_this_room_where_cherry_blossoms_bloom/ (I recommend this one the most; I sobbed like a little bitch through the whole story)
https://www.mangago.zone/read-manga/kimi_to_tsuzuru_utakata/
https://www.mangago.zone/read-manga/ohana_holoholo/
https://www.mangago.zone/read-manga/this_love_that_won_t_reach/ (rushed and ambiguous ending;MC is in love with her sister-in-law)
https://www.mangago.zone/read-manga/throw_away_the_suit_together/
https://www.mangago.zone/read-manga/vampire_chan_junior_chan/
https://www.mangago.zone/read-manga/kimi_ga_shinu_made_koi_wo_shitai/
https://www.mangago.zone/read-manga/oniisama_e/
https://www.mangago.zone/read-manga/the_story_of_a_person_who_grew_a_flower/ (short story; student x teacher relationship)
https://www.mangago.zone/read-manga/shiroi_heya_no_futari/ (one-shot)
I might marry you
I want to cry, recommended me the most heart wrenching story you know ( no matter the genre )