[Twilight Sparkle] 

        When I was just a filly, I found it rather silly 
        To see how many other ponies I could meet 
        I had my books to read, didn't know that I would ever need 
        Other ponies to make my [bad word] 

        But there was one colt that I cared for 
        I knew he would be there for me 

        My big brother, best friend forever! 
        Like two peas in a pod, we did everything together 

        He taught me how to fly a kite (Best friend forever!) 
        We never had a single fight (We did everything together!) 
        We shared our hopes, we shared our dreams 
        I miss him more than I realized 
        It seems... 

    [Applejack, Fluttershy, Pinkie Pie, Rainbow Dash, and Rarity]

        Your big brother, best friend forever 
        Like two peas in a pod, you did everything together 

    [Twilight Sparkle]

        And though he's, oh, so far away 
        I hoped that he would stay 
        My big brother best friend 
        Forever... 
        Forever... 

Reprise
B.B.B.F.F. (Reprise)
 
Episode  Canterlot Wedding - Part 1
Character(s)  Twilight Sparkle
Sung by  Rebecca Shoichet
Music by  Daniel Ingram
Steffan Andrews (orchestration)
Lyrics by  Meghan McCarthy
Length  0:18
Season  Season 2
Episode Transcript  Canterlot Wedding - Part 1
International versions

    [Twilight Sparkle] 

        He was my big brother, best friend 
        Forever... 
        And now, we'll never do anything 
        Together...