As he grows older, he develops a crush on one of the classmates, and he thinks that he is in love and she's the one. But usually it just ends up becoming a phase. And that obsession zone loses its control over the mind and something else takes over. You get busy with your toys, games, friends, et cetera, and life keeps pulling you in various directions, and time goes by. Then you enter your late teens, and now you have a girlfriend