U were out of class once, when Mammon asked u out, he wanted to go with u on a date

Diavolo knew this, he always knows what happening with u

it made him sad cuz u r always busy with the brothers and he has no time for him

Today he invited u to his palace in his office he approached u, he was angry despite his smile

"I heard u went out with Mammon on a date, don't u think it's only fair to go out with me too"

"in fact, maybe u should stop going out on dates if I'm not ur partner in it"