Please help me find the songs from the movie 'Yoo Yeol's Music Album'.

Hello, I recently watched the movie 'Yoo Yeol's Music Album' and I was really impressed by a song that played in the background. I'm looking for this song. Does anyone know it? The lyrics roughly start with "When my loneliness grows, the longing that has grown as big as my shadow takes me there. I meet you there. My prayer to be with you and the last moment." This scene plays the background music when the female lead realizes that she hasn't given the male lead her email password. The exact timing when the song starts in the movie is at 42 minutes and 30 seconds. If anyone knows about this song, I would appreciate it! I have already found out that the song is called 'First Love' and is from Yoo Yeol's music. Thank you!