They met at a Bakery a long time ago, and have only grown closer since. Celestia loves him because of how he is, though he does't look that bad either. On the day of their wedding something terrible happened however. He was gone! After starting an investigation Twilight Sparkle was the one who finally discovered who it was that took the princess' soon to be prince.
One shot.

If you guess who her husband is before the end of the story you get an internet.