"Only Late at Night" by Ourealgoat ft. Jay Park explores a relationship that exists exclusively in the dark, late hours of the night. The song suggests that the connection between the two individuals is secretive and potentially dangerous, as indicated by the line "You approach me with such a dangerous expression."

The lyrics emphasize the protagonist's unwillingness to let go of this person, even though they only seem to exist in the nighttime. The repeated line "I will never let you down" suggests a sense of desperation and a fear of losing this connection.

The chorus, with the lines "Empty your glass" repeating, can be interpreted as a metaphor for both emptying one's emotions and desires, as well as an invitation to indulge in escapism. This signifies the protagonist's willingness to go along with the situation, despite its potential consequences.

Jay Park's verse adds further complexity to the narrative. He expresses his confusion about the other person's feelings and their undefined relationship. The line "I'm the main not no side" suggests that he sees himself as a significant figure in the relationship and not just a casual or temporary presence.

The pre-chorus highlights the notion that after the long night is over, they will return to being strangers, emphasizing the temporary and fleeting nature of their connection.

Overall, "Only Late at Night" explores the exhilarating but ultimately transitory nature of a clandestine relationship that unfolds exclusively during the darker hours of the day. It captures the intensity, uncertainty, and the longing to hold onto a connection that may only exist in the shadows.