Why was she such a stupid selfish whore? Did it ever cross her mind that thousands of people are dying because of her childish romance? Or that she's seducing a married man and the son of the man who burned her brother and Father alive?
I mean holy shit. If there was ever a worse character in ASOIF series it is Lyanna Stark. She is such a retarded bitch.
I'm sure the fat man would've had her regretting it and getting locked up in the tower by Shitgar, who desperately needs his two sons.