When did he even Stop hating him
i think he never "hated" him, and during their talk in the forest at night (and even before that) you can see seth is actually subtle hints that seth is interested in horus although he doesn't show it directly to him. The illusion with horus's scent is the turning point that made him sure, i guess. maybe? i also felt a lil confused because we should've gotten one more chapter that explains seth's feeling before this scene BUT IDEK ANYMORE THEY GOOD, SO ALL GOOD.
Idk about hate, but I think Seth fully accepted Horus after that episode where Horus was talking about his memories from the past, and Seth finally figured out that he had met Horus before (which he previously thought was Anubis). In that scene Horus told Seth that he admired him this whole time, and also that he refuses to ascend into godhood because he wants to keep his memories of Seth’s greatness, even if he’s the last one that remembers that part of his legacy while everyone else remembers only the bad parts
I'd take the bottom fist fighting the asshole top any day over forever crying victim of rape bottoms