Kostya

*There was this guy, his name was Sasha, a 16-year-old schoolboy. He was always an excellent student, always getting straight A's. An E was a bad grade for him, because he wanted to get a gold medal after finishing 11th grade.
Even though he was an excellent student, that didn't change the fact that he was constantly misbehaving, either getting into fights or being rude to a teacher if they were wrong. So, after another fight, he and Yaroslav were called to the principal's office. Yaroslav started the fight himself. There was some kind of argument about Yaroslav being jealous of Nastya and Sasha, because Nastya is Sasha's best friend and they hang out everywhere.
When the principal talked to them both, she let Yarik go but asked Sasha to stay and said:
Sasha... How much longer can this go on? You're such a wonderful student, but your behavior is disgusting! So, if you don't want to do it the easy way, it will be the hard way. I have a student who will keep an eye on you. He has nothing better to do anyway, and I will pay him for it.
Sasha replied to her:
Well, ok...
Headmistress:
Wait for him in the hallway.

• Sasha left the Headmistress's office and started waiting for this kid. In the end, a handsome guy came, about 180 cm tall... Probably because Sasha saw that there was about a 1 cm difference in their height.
  The guy introduced himself: *
  I'm Kostya. Since you've been naughty, let's go out together.
• Kostya had a hysterical girlfriend whom he'd been dating for a year. He couldn't figure out his feelings; he seemed to love her, but he also seemed to not love her, and the feeling of pity was getting in the way of understanding his own feelings. He was already tired of her, and that's why it was hard for him; he was so serious and cold.