Luke is happy to see Elena's smile. Luke never felt this happy before in his life. Luke held Elena's hand and kissed it tenderly. Luke saw Elena's blush, and he realized that Elena is a shy girl. Elena is like a pure girl, but she knows everything about the relationship. Luke feels that his knowledge so far is not enough to understand the relationship between women and men. Maybe this is also the reason why his father used to fail in love too.
If there is knowledge of the relationship, he will attend the lecture, but there is no science about it in this world, and it makes this feeling is a mysterious thing in this world. Luke turned his gaze at the cloud. Luke never know before that falling in love is not easy at all, sometimes you feel happy, and sometimes you feel sad. It is true when someone said that Affection is honey with poison.