NOTE: CONTAINS SPOILERS. DO NOT READ IF te ONLY WATCHED THE TV mostra o HAVEN'T FINISHED aDwD (if te did only watch the TV show, go pick up the books. Now. They are waayyy better.)
When Daenerys goes into the House of the Undying, it is prophecied that she will know three betrayals. Both she and the fan assume that this means she will be betrayed three times. I have a different theory.
The last betrayer will be Daenerys. Note that the prophecy detto she would know three betrayals and this is the sort of book where the exact words matter. At first I thought it...