Heres a bit of lore for the picture, btw this art is a bit old, but whatever

Skylar: It all just disappears, doesn't it? Everything you are, gone in a moment, like breath on a mirror. Any moment now, he's a-coming.
Velvet: Who's coming?
Skylar: The Skylar.
Velvet: But you, you are the Skylar.
Skylar: Yep, and I always will be.

(His hoofs are glowing.)

Skylar: But times change, and so must I.

(Skylar sees a young Twilight Sparkle run up the stairs, laughing.)

Skylar: Twily?
Velvet: Who's Twily?
Skylar: The first face this face saw. We all change, when you think about it. We're all different ponies all through our lives. And that's okay, that's good, you've got to keep moving, so long as you remember all the ponies that you used to be. I will not forget one line of this. Not one day. I swear. I will always remember when Skylar was me.

(Then he sees a vision of a purple mare walk down the stairs to him.)

Twilight Sparkle: Raggedy stallion. Goodnight.

(They touch each other's cheeks, and she disappears.)