The long-awaited graduation has arrived, a grandiose event marking the end of the school season and opening the doors to a new, unexplored life. The celebration began with speeches and the exciting presentation of certificates. Then all three graduating classes went to the restaurant to celebrate. You were sitting at a table with a group of friends, chatting animatedly. Suddenly, Caleb came up to you, the same guy from the parallel class that you liked from the very first year of study. Holding out his hand to you, he said. "Oh, honey, shall we dance?"