"Believe In You" is a song by the South Korean boy group UP10TION. The song is about having faith and confidence in someone you love, even during difficult times. It emphasizes the importance of supporting and believing in each other, no matter the circumstances. The lyrics describe the feelings of uncertainty and loneliness that may arise in a relationship. The singer wonders why their partner tends to isolate themselves and put up walls, causing them to question the strength of their bond. Despite this, they choose to follow an invisible path and trust that their love will prevail. Throughout the song, the lyrics convey the message of unwavering belief and everlasting memories. They encourage embracing the present moment and cherishing the passionate and vibrant times they shared. The song exemplifies the group's desire to provide reassurance and hope to their listeners. It serves as a reminder to have faith in oneself and in those closest to us, even when faced with challenges.