Part One

He hates James Potter's guts, for stealing Sirius away at such an impressionable and vulnerable age. He hates James Potter for the easy love he has for everybody, the way he can light up a room without thinking. He hates James Potter for being so bloody good, and not having to deal with any of the bloody bad.

He doesn't hate James Potter enough to not recognise the stirring in his gut as more than pure hatred.

[Or: a very one-sided haters to lovers fuck around and find out.]
I don't know if I'll do a part two 😭