It is indeed a happy ending because they got engaged. Maybe they think that weddings as ending is already customary. Honestly I felt genuine happiness from both of them, their actions are very sincere, it felt real. Thank you SBS for giving us a light, heartfelt story of love and happiness. Congratulations to my new favorite romcom couple, Ahn Hyo Seop and Kim Sejeong! Saranghae! 💙❤️👩❤️💋👨