Almost, Steve. This is like the spoiler to end all spoilers. I probably just spoiled the books too 'cause I'm wicked awexomeSorry son but RhaegarxLyanna isn't breaking news for anyone.
Cat Stark will learn the truth of Jon's parentage from Howland Reed. She realises how utterly troutty she's been to Jon for no good reason, and similarly to Dondarrion sacrificing his un-life for Cat, she will achieve redemption and peace by sacrificing her un-life for Jon and he will learn the truth. He is the Prince that Was Promised and his is the song of Ice (Lyanna) and Fire (Rhaegar)
I'll give you 5 currency if you stop watching the show and posting in this thread Sam given how much you evidently hate it What did Hodor ever do to you?