The song "Love Letter" by zalagasper is about a deep and enduring love for someone. The lyrics talk about the beauty of their love being like a piece of art, something that is cherished and admired. The singer expresses their love for their partner, describing how they fell for them and how their love keeps getting better and better. They also talk about how their love has lasted through many sunsets together and how it deserves a love letter. The chorus emphasizes how their love is their favorite piece of art, and how it's the best thing ever painted by their heart. The singer is pleading for their love not to fade, expressing how they've loved it from the beginning and how it's something truly special to them. Overall, "Love Letter" is a romantic and heartfelt song that celebrates the beauty and endurance of love. It expresses the deep connection the singer feels for their partner and their hope that their love will continue to flourish.