Three nights a week, Shining Armor returns to bed more tired than normal. Annoyed by his complete lack of openness, Princess Cadence goes out of her way to figure out what's going on.
As it turns out, Shining has been spending all that time with another of Equestria's most popular mares.
Sort of. Basically. It's kinda complicated.
Artwork by Chrznek97. One character tag omitted due to spoilers.