Also, for everyone below, lets also remember that those who so easily accuse are often the ones guilty. She was the first person to ask whether he had someone back home the first time they were together, then proceed to say she doesn't care and wants to continue as the one for her. Also, to my knowledge, has never once replied to his feelings of love.
Anyways this was evident from a country mile away, so lets watch the chaos ensue. For all the gripes I could imagine folks would have if this manga was concurrent and popular, lets atleast thank them for the fact that 40 chapters in and we've done all of this already. Other manga are 100 chapters in and don't even have a confession yet