Dear [Partner],
I wanted to take the time to write you a love letter to express the depths of my adoration for you. From the moment we met, I knew that you were special and I have been filled with a deep passion for you ever since.
You have shown me such devotion and tenderness, and I am constantly in awe of your affection. I admire everything about you and am grateful to have you in my life.
I love you more than words can express and am so thankful to have you by my side.
Yours always, [Your Name]