Meaning of "Behind Locked Doors" by Ten After Two

The lyrics of "Behind Locked Doors" explore the complexities of relationships based on superficial attraction and physical desire. The speaker seems to be engaging in a casual encounter with someone, acknowledging that it may not be based on love but lust. They are aware of the superficiality of the situation and the potential consequences, yet still choose to proceed with the encounter. The repeated references to the other person being "obvious" suggest a lack of depth and authenticity in the connection, with both parties fully aware of the intentions behind their actions. Despite the acknowledgement that it is a meaningless mistake, there is a sense of longing for the encounter to hold some kind of significance, even if it's just to make a mark in memory like a haunting ghost. The speaker seems to be torn between the fleeting pleasure of the moment and the lingering regret that follows, highlighting the temporary nature of physical encounters devoid of emotional connection.