Elio explained that as he was trying to experience her presence at the café as something meaningful, especially since the place already bore the imprint of other events in his life, they had an argument. She kept saying that there was nothing special about the kind of coffee they brewed here, he countered by saying that this was not about the coffee at all but about being here to have the coffee. Their disagreement not only ruined the vigil but made him hate her.
