Meaning of "Fidelity" by Starsailor

In the song "Fidelity" by Starsailor, the lyrics express a sense of intense devotion and exclusivity within a romantic relationship. The protagonist emphasizes their deep connection to their partner, highlighting that their world is solely focused on the other person. The lines "You take me 'cause your neighbour does not see / That would seem like lunacy to me" and "Tie your lover down while you are free / That would seem like pure hipocracy" suggest a sense of commitment and loyalty that transcends external influences or societal expectations. The repetition of "This is my head, you're in my world" reinforces the idea that the protagonist's thoughts and feelings are consumed by their significant other. Overall, the song captures the intensity and all-encompassing nature of love, portraying a relationship where nothing else matters except for the connection shared between two people.