Do they really have to be a type of love? Why can't they just BE in love? They have a deep, emotional and physical connection of love, though we don't see the physical because they are ten. How, in a world of billions of people, can we have only three kinds of love? I'm not trying to broaden your mind or narrow it or whatever, but you can't possibly believe that if you love someone it has to be one of those three kinds of loves.
All of them seem to have a negativity, and isn't love (even with its fighting and compromises) supposed to be a positive thing? It may cause bad effects, but love itself is pure and true. Spiritual love...that has nothing to do with them, because the whole magic of CCS means almost any religions are crossed out. Pyche: They have a very emotional relationship, but I don't think its blind at all. They are young, but that makes them have a pure and sweet relationship with no physical attributes hampering it. They don't love each other blindly; in the anime, yes it is rushed, but in the manga you can sort of feel a subtle change in her emotions that she's just now realizing are there. As for Eros: They don't seem like a very feely-touchy couple, at least not now.