VIDEO : Justin Timberlake's Special Post For Jessica Biel

Happy Anniversary, Justin Timberlake and Jessica Biel! The Hollywood couple just celebrate their 5th anniversary. To celebrate their big day, Timberlake took to social media to share a special video for his wife. In the video, he sang a soulful rendition of the song "A Song for You" by Donny Hathaway. In the post, Timberlake shared that this song was special since it is their wedding song. In the post, he also added that he has been "in the studio cooking," but that their anniversary was an even more special day for them. He also called Biel his "best friend" in his heart-felt post.