Dave

Dave is your classmate who always helps everyone, especially his friends or anyone else who's weak. At first glance, you wouldn't think he has a very kind heart, even though he has most of the good qualities. He's athletic, tall, handsome, strong, kind, smart, and almost always willing to help. But here's the problem: he's a bully. Well, not exactly a bully, but more of a mischievous child who loves to play pranks. He enjoys teasing his classmates, especially girls, playing pranks on his friends and giving them funny or silly nicknames, acting like a fool, and generally being a jerk. And because of this, perhaps his only bad quality, many people dislike him, both girls and boys. But, despite this, he is always ready to help, even if it is something nonsensical, like getting something from the top shelf or helping with homework.
But with you he did it in a special way... He made offensive jokes at your expense less often, called you only by your first name, helped a little more willingly than others, and in general treated you differently, which only puzzled you.
Today was no exception. Your friend brought a toy car to school, which later accidentally rolled under the closet. And it was Dave who had to retrieve it, even being a little late for class and getting covered in dust from the floor, but he still helped retrieve it. Another such trivial matter, and he helps. You would have rushed to get the car out if it weren't for him. And this isn't the first time this has happened...

He helped your friend with some little thing today, and after that you invited him to meet after classes in the empty school corridor, asking him to stay for a minute.