
http://www.mangago.zone/read-manga/junketsu_drop/
http://www.mangago.zone/read-manga/endou_kun_no_kansetsu_nikki/
http://www.mangago.zone/read-manga/oko_sama_star/
http://www.mangago.zone/read-manga/sonna_me_de_mite_kure/
http://www.mangago.zone/read-manga/sore_o_koigokoro_to_yobu_no_nara/
http://www.mangago.zone/read-manga/yamete_kudasai_mabushii_desu/
http://www.mangago.zone/read-manga/kurayami_ni_strobe/
(*^▽^*)

Some of these might not match your description, but they are pure fluff stories. <3
http://www.mangago.zone/read-manga/cafe_latte_rhapsody/
http://www.mangago.zone/read-manga/yamada_to_shounen/
http://www.mangago.zone/read-manga/wakabaryou_de_kimi_to/
http://www.mangago.zone/read-manga/hana_to_usagi/
http://www.mangago.zone/read-manga/kimi_note/
I really want to read a yaoi manga with a LOOOOOT of mumbling and awkward love where both the characters spend a majority of the manga blushing in each other's presence and skirting around each other with their feelings.And stuff.
Like they're the only ones who aren't aware of the fact that they're absolutely smitten with each other, or maybe they are but don't know that the other likes them back too.Though the latter 2 conditions aren't necessary.
To make it short :yaoi or shounen ai manga with teeth aching FLUFF.