Shia LaBeouf took the stage at Sunday night's Grammy Awards [1] to introduce his friend Sia's performance of "Chandelier." Shia, who stars in the "Elastic Heart" video [2] along with dancer Maddie Ziegler, seemed like the perfect person to welcome Sia to the stage — they both share a love for creativity, and, well, they're both a little eccentric. When Shia stood at the microphone, however, many people were baffled by the pink slip of paper he was reading from. It sounded a bit like a fan letter or love note, and now we know that Sia's introduction was both of those things. Here's what it said:

"For Sia: I feel like this may be strange to say this here. I love you so. Punch me if I stop crying. I raised a white flag for you, defeated finally. If strength were made of broken pieces, you and I would always win. It is, though, and buildings and statues wink at us. I could squeeze you to zero. I'll never know another. What am I going to do? Punch me if I stop crying, and I'll do the same. Love, Erik."

The note Shia read was a sweet, poetic love letter from Sia's husband, Erik Anders Lang. A source revealed to Us Weekly [3] on Monday that Shia and Erik, who tied the knot with Sia back in August [4], "conspired together and did this as a gift to Sia," adding, "She was surprised and had no idea." Watch Shia's intro above, and be sure to check out Sia's amazing Grammys performance starring Kristen Wiig [5].