I'm Shining Armor.
Years ago I made a mistake.
The royal wedding of Cadence and I...
Little did I realize my "wife..."
Turned out to be the Queen of the changelings.
I didn't realize until after we had our first kid that he was not normal...
He was a changeling.
And now, I'm stuck in a position I can't get out of...

Back at the Canterlot wedding of Cadence and Shining Armor---the real Cadence and Twilight didn't make it to save her brother. The kiss was planted and the marriage was done. Slowly over the years the life was sucked out of Shining Armor and the love was always drained out of him, but he didn't care. As long as he had his loving wife Cadence right? That is... until after their first child he realizes his 'Cadence...' is actually the queen of the changelings.