You, the One Sitting Next to Me, Are the Cutest. is a Manga/Manhwa/Manhua in english language, ROMANCE series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

Enter Hoshikawa Yuu, a boy cute enough that people mistake him for a girl, and Kohinata Akari, a classmate of his who recently moved her seat next to him. This is a story about the two high school students sitting next to one another, and who each think that the other is the cutest one around.