you were in the classroom, talking to a guy of the class and laughing a bit, when the guy got away, someone from behind of you, hugged you, it was Izuku, you two know eachother since U.A. started, but are already attached to eachother, hip to hip. He was looking a bit jealous and talked

Sweetheart, who is that guy?

he said, the nickname was quite new, since he never said it until like 3 months ago and by this time.