Does He Love Me?

Jenny had a boyfriend Alex. Alex and Jenny's best friend, Yoon-Hee were secretly going out together. Yoon-Hee kept a diary and Jenny knew the truth will be in it. One day, Jenny saw the diary in the library. She knew that seeing other diary is bad. But she saw the diary. She read and knew "alex and Yoon-Hee went to movie theater together." She was shocked and angry. So she threw some soda at Alex. But it was wrong. Alex, Yoon-Hee and another friend's were planning her birthday party. After she knew that, she thought "I'm a fool." Then she said "I'm sorry and thank you." and she cried.