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Idk if you've read these yet, but some that come to mind are:
http://www.mangago.zone/read-manga/mousouka_koi_o_suru/
http://www.mangago.zone/read-manga/hana_koi/
http://www.mangago.zone/read-manga/koisuru_barairo_tenchou/
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Sorry for the really late reply. I made a small list of fluffy bl mangas, you can check out those if you want. Trust me, every story i added has no shitty ntr or love triangles. Some of them may contain some sad moments but nothing too dramatic or unbearable. Its just a bunch of stories of the semes and ukes being lovey dovey. I hope you enjoy them. I made the list specifically after reading your comment. Enjoy (⌒▽⌒)
Awe...it was so adorable. Uke was so freaking cute, to the point that even i fell in love with his cuteness. And the Seme was so caring and kind, not to mention, hot af. Loved this story.
Fluffy stories like these without any meaningless drama and love triangles/ntr are my favourite. Wish i could see more of their fluffy moments but i am glad with what we already got.