The song "Best Part" by Joseph Solomon is about the powerful feelings of love and admiration that the singer has for his significant other. The lyrics express the intense connection that he shares with his partner, both physically and emotionally. The singer finds great comfort in his relationship, and he sees his partner as the missing piece that makes his life complete.

In the chorus, Joseph Solomon reveals that his partner is the best part of his life, and he feels like he is living in a movie with her. He seeks to celebrate her beauty and reminds her that she is special and exceptional. He is willing to follow her anywhere, no matter the distance, and he recognizes her as a shining star.

The singer also makes it clear that he wants his partner to express her love for him too. The outro emphasizes that he desires her to say something if she loves him.

Overall, the message of "Best Part" is about the beauty and value of true love. It's a tribute to the magic of a deep, meaningful and fulfilling relationship.