Responses

Yes, agreed. NO rape, no multiple lovers and no cheating. But honestly, I don't see that with Masaki at all. I mean rape could happen to anyone, but the rest... he doesn't seem the type for multiple partners (seems more like Hiro was the first at all) and also not the cheating type. And since those two are destined mates Hiro won't either.
Argh, I want sensei make manga that about those two past like how they met ,how they love each other and getting married (⊙…⊙ )