Okay, YES, this contains Game of Thrones spoilers. If you didn't watch the finale, A. Don't read this! and B. GET ON IT.
So it finally happened. Well, two important things happened—one was that Bran confirmed what many viewers had already accepted as truth. Jon Snow isn't Jon Snow at all, his real name is Aegon Targaryen, and he's the son of Rhaegar Targaryen (Daenerys' brother) and Lyanna Stark (Ned Stark's sister). That means the Mother of Dragons is also the Aunt of Jon Snow/whatever name he'll eventually go by.
The other important thing that happened is that all that sexual tension between Daenerys Targaryen and Jon Snow finally erupted into full on sex. As in, yeah, they did it, and yeah, we were all into it, despite (uuuggghhh) incest. Why are you doing this to us, writers?? Isn't life confusing enough as it is?