I don't think he romantically loved Mamiya. He has a complex feelings toward Mamiya and developed a certain affection for him. Maybe it came with Stockholm syndrome or out of necessity but love is far fetched for them.
Pretty sure a little bit of all of it. I think in his way he did love Mamiya. Why they found each other in the afterlife. I think his previous love and the relationships around him deadened his idea if love and relationships. It wasn't a grand passion, but a calm love. One that might not have happened at all but came together due to circumstances. Mamiya probably always had feelings for Sada, but due to the rape and torture he endured in high school would never be a grand passion. I would like to believe they both truly loved each other. Being exactly what they both needed to heal.
I’m wondering, did Sada ever loved Mamyia ? he sure cared for him, but as much as I’d like for it to be the case I don’t think he loved Mamiya… and that’s making me even more sad
anyway this was truly a masterpiece. Mamiya’s despair at the end, facing the death of the one he loved… it broke me so bad ╥﹏╥