A Song of Ice and Fire
An ancient prophecy states that the prince that was promised will be marked by the song of ice and fire and a bleeding star. Of course, fire and ice are complete opposites but, according to George R.R Martin, the meaning is metaphorical rather than literal. Fire is love, passion, and sexual zeal, whereas ice is revenge, betrayal, and hate. Hence, the prince that was promised will have experienced the best and worst of both worlds. Sound familiar? Jon Snow was in love with Ygritte, yet he betrayed her. He saw the real danger beyond the wall and he was not blinded by hate against the Wildings. Although Jon Snow's murder at the hands of his 'brothers' of the Nights Watch was brutal, it was necessary to fulfill the ancient prophecy.
Rhaegar Targaryen + Lyanna Stark = Jon Snow.
After Robert's Rebellion, Ned Stark went back to Winterfell with a newborn bastard, Jon Snow. However, Ned Stark refused to talk about Jon Snow's mother despite being asked by his wife and King Robert. Even Stannis Baratheon -- someone who knew Ned Stark well -- said it was not his way to have a child outside of marriage. For a man who'd rather lose his head than lose his honor, it seems unfathomable that Ned Stark would cheat on his wife. The only thing that came before honor to Ned Stark was his family. That's why he confessed after being falsely accused -- not to save his skin, but for the sake of Sansa and Arya. But would Ned Stark go against his code if his dying sister asked him? Absolutely. Before Lyanna Stark died, she called out to her brother, Ned Stark, to promise her something. That promise haunted Ned Stark for the rest of his life. It's possible that Lyanna gave birth to Jon Snow and Ned Stark promised to take care of him. In the books, Jon Snow resembles Arya Stark more than any of his siblings. It's worth noting that Ned Stark thought Arya Stark's appearance closely resembled Lyanna Stark, and that Jon Snow's mother left too much of herself in her son's appearance, allowing him to hide in plain sight. However, the same cannot be said about his father, Rhaegar Targaryen, who fled off with Lyanna and set off a chain of events that led to Robert's Rebellion. Since King Robert wanted every Targaryen dead even across the narrow sea, revealing the true identity of Jon Snow would put the child in danger.
The Bleeding Star
The red star/bleeding star reveals a significant detail in the coming of the prince that was promised. When Daenerys Targaryen acted either too stupid or too brave by walking into a burning funeral pyre, a red comet appeared in the sky. It even appeared on King Jeoffrey's name day. Does that mean that King Jeoffrey was the prince that was promised? If the answer is yes, then Westeros is doomed forever! The ancient prophesy originated more than a thousand years ago probably in Volantis before the events in #Game of Thrones. Just a thought; could the prophecy have been altered from a 'bleeding stark' to a bleeding star? It sounds ludicrous but House Stark was virtually unknown when the prophecy was revealed to the world for the first time. Who knows? Maybe the proclaimers were like, "Stark? What is a Stark?" It must be a star!' Nevertheless, Lyanna Stark must have bled to death after giving birth to Jon Snow. Perhaps a red comet will appear again next season to signify his return.