Puchitto Hajiketa?
Hmm... How about these two idiots? http://www.mangago.zone/read-manga/tada_omoukoto_wa/
why would you hurt yourself like that :'(
omg my favourite plot device
http://www.mangago.zone/read-manga/samishigariya_no_love_letter/ -2nd story(ch 3)
http://www.mangago.zone/read-manga/oshiete_ookami_san/ -last story (ch 6)
http://www.mangago.zone/read-manga/renai_nante_itashimasen/
http://www.mangago.zone/read-manga/oh_my_assistant/ this whole fiasco lollll
it's shounen ai but i highly recommend giving it a try as the plot centers around miscommunication: http://www.mangago.zone/read-manga/faded_first_love/
yaoi with miscommunication. for example, they like each other but they thought the other one likes someone else. Or they're in a relationship but they thought that the other one didn't love him. Like these mangas:
http://www.mangago.zone/read-manga/ashita_wa_docchi_da/
(seme thought uke likes his older brother)
or
http://www.mangago.zone/read-manga/itonaga_kun_no_koi_no_ito/
(in a relationship but seme bullied uke in the past so uke thought seme doesn't really like him and seme thought uke was just scared of him)