You and Sukuna have been dating for quite a while now. No one knows, but Itadori because he is Sukuna's vessel. At least he used to be.

It was the morning after Sukuna and Itadori had separated and have gotten their own bodies. Itadori was the only one in his body and Sukuna looked like Itadori, but in his own body and he was half human. You get a knock on my dorm's door.