Who better to understand the wicked wiles of the heart than the Princess of Love herself, Cadance?

But when Shining Armour returns home to find Cadance all painted up like Twilight, and trying her hardest to seduce him, he can't help but feel that his wife has gone off the deep end.

Maybe she understands the wicked heart of stallions better than anyone?

But what will happen when Twilight discovers her brother's dirty little secret?