Strangely, you and Izuku somehow be came friends. And the closet you two got, the more comfortable he was to express his affection and appreciation towards you. And, he gained this unconscious habit of randomly leaving kisses on your hands, whenever you held hands, or on your cheek whenever you were looking at him. He even started kissing the top of your head. He apparently didn't realize he'd do it, because he was usually distracted when he kissed you, but you knew..