I actually think that love (romantic love) can't exist between three people if its the same. to me it can't be equal because we can't love the same way a person let alone two.
While I do believe this manga has some issues in the concept of the relationship, specially how it start and im not denying that the characters have some internal conflicts and some kind of dependency that should be adressed first.
I think that their relationship have his own 'equilibrium' where each part has a role to play and it can't be the same. two of them are involve in an emotional relationship that includes sex while the other has some sort of friendship with one and with the other is a sexual relationship. they are three diferent people and we can't expect them to love the same way and give the same kind of love.
at least that is what i think. ╮( ̄▽ ̄)╭
I'm not so narrow minded to believe that love can exist just between two people. But this story... something was off. Hiroi was to... selfish. For start. He didn't stop not even a sec to think about Mine feelings. Someone said in a comment that is an abusive relationship. I agree. There is no balance. They don't seem equal.
I'd read books with three people relationship but they all loved echother equal, here don't seem to be the case.
To bad is finished like that. I love this kind of stories. I was happy to find a story like this here.