The fact that in hiyori's memories there a whole ass page dedicated to JUST yato
So yato definitely got to know about her feelings towards him. He definitely knew that their love was mutual. He definitely wanted to reciprocate it so badly but decided to cut ties instead. Decided to never see her again because he couldnt bear putting her through more pain. Because he was SURE that hiyori would continue to prioritize him over herself, because thats just the kind of lover she is.
ITS JUST.
AUUUUGHHHHH. I CANTTTT












