Read manga: Gosan no Heart

manga
Summary:

Jaded Miki treats love like a game, playing with and discarding girls on a whim so when he sees Udou earnestly and unsuccessfully trying to reject a tearful love confession, Miki steps in and says, "Udou-kun is with me now." But what starts out as a lark to relieve the boredom of daily life quickly becomes serious ....