VIDEO : Justin Timberlake's Love Note to Jessica Biel

According to US Weekly, musician Justin Timberlake and actress Jessica Biel celebrated their fifth wedding anniversary on October 19. To mark the occasion, JT wrote a love note to his wife on Instagram and shared a video of himself singing their "first dance" song from their wedding. He belted out Leon Russell?s 1970 hit ?A Song For You.? Timberlake wrote on Instagram, "Five years ago, on this day, I became the luckiest man in the world when I exchanged vows with my best friend." The music man also thanked his wife for teaching him the value of true love.