Game of Thrones finally reveal Jon Snow's true parents

Game of Thrones' book fans will be relieved to see that R+L=J is finally confirmed.
Following season six's explosive finale this week, Jon Snow's birth was shown in one of Bran Stark's flashbacks as he follows his father Ned to rescue his sister Lyanna.

In the HBO show, the audience discover that Jon is the son of Lyanna and Rhaegar Targaryen and not as he was previously thought to be (and punished for) – Ned Stark's bastard son.
It was only whispered, but fans were able to put one and two together but now it has been confirmed by HBO – the makers of the hit series.
So, Jon's aunt is actually Daenerys!
HBO released the confusing infographic, ironically to clear up any questions fans may have over bloodlines.

Just to re-cap for those of you who might have forgotten – Rhaegar was Daenerys' brother and eldest son of the Mad King – King Aerys. He kidnapped Lyanna Stark after falling in love with her – which Robert Baratheon (Cersei's husband from season one) who was meant to marry her.

Robert led a war to get Lyanna back, leading to the death of King Aerys and he tried to extinguish the Targaryen bloodline – but Daenerys and her brother Viserys scarpered.

With her last breath, Lyanna begged her brother not to tell a soul about her son's father – which is why it was kept such a secret even from his wife Catelyn – in case Robert killed the child, who was the heir to the Iron Throne.