Wakarete Yaranai!

"We're pretending to be lovers, right...?" "Let's break up." Akira Watase is dating his best friend, Fumiya Watari. But it's all a camouflage! In order to keep girls away, Akira is playing the role of Watari's lover, who's famous among the female students at school. Watari even kissed him to prove it to the girls!? Akira was depressed, saying that his youth is completely over, but for some reason, he keeps pretending they're dating...? (Source: Ichijinsha, translated)