Haru to Yuzu wa Mada Shitenai

Haruhito and Yuzuki are childhood friends who just started dating. Just when their feelings finally got requited, and their relationship seemed to be smooth-sailing, Yuzuki feels frustrated that they haven't shared the kind of closeness most couples have... So he tries to take the initiative, but it seems like Haruhito has some issues...!?

(Source: Overlap, translated)