You have to appreciate male MC. He's not a liar and he refuses to do anything behind the back of the people he loves. He respects their opinions too much to simply disregard them and wants to please them and see their wants and desires fulfilled. He wouldn't cheat, and would want them both to fully be aware of one another before doing anything. You gotta respect his dedication and the fact he's honest above all.
In the immortal words of Queen, too much love, will, in fact, kill you.
Eh, there's been situations where it's worked irl. Bigamy is a thing, just not in modern Japanese culture.
@teddeh