Heartfelt letters to best friend will express your love, gratitude, and admiration for your bestie. Best friends are like stars in the daytime sky – you may not always see them, but you know they’re there, brightening your world. Whether you want to surprise your bestie with a letter on any day, celebrate a special occasion, or want to express your appreciation for the wonderful person, heartwarming letters to a friend help you celebrate your unique bond with your best friend.