Is This the Kind of Love I Want?, Volume 1 (manga)

When Uta comes out as gay and confesses he wants to sleep with another man for once, his friend Ryouma -- who's a virgin himself -- obliges. But Ryouma is straight. Or at least, he thinks he is. The two men live together as friends, living their own lives and dating their own partners. But they continue to be inextricably drawn back to one another…