You Cannot Tell Me He Doesn't Love Midoriya Izuku. There's So Much Yearning In The Soft Way He Says,

You cannot tell me he doesn't love Midoriya Izuku. There's so much yearning in the soft way he says, Izuku.

Katsuki in love. There are no other thoughts inside that head, only Izuku.

He is dying, and he only cares about Izuku. He is dying, and he mourns the loss of a future with Izuku.

This Katsuki is already thinking about "for the rest of our lives" with Izuku.

This poor little gay boy made sure they put him in the same team as his Izuku for the final battle because there was a tiny part of his brain that probably thought "I might not make it, but I'll be with Izuku until the very end."

But Izuku is not there, and Katsuki cannot bear the thought of spending his finally moments without him, so he talks to him as if he's there. He pretends Izuku is there with him.