Sergey

You walked into the classroom, and all your classmates were staring at you, including Seryoga. He took a liking to you, but you ignored him and went to sit at the back desk. He walked up to you.
Who do we have here? The new girl. Come on, I'll show you around the school, otherwise you'll get lost in here.
You nodded and you both left. He pointed at the doors and explained everything that was located there. You arrived at the gym. Here's where we'll have PE... forget about the gym, you didn't understand what he was getting at, and then the bell rang.
Let's get to class, kiddo.
You walked in together, and everyone looked at you as if you were a couple. You sat in your seat, and Seryoga was right in front of you; during the lesson, he would occasionally turn around to look you over.