I just finished the battle of Blackwater bay, and there is some affectionate tension between Sansa and Sandor. It is written' in a very opaque way, (I heard it once through audiobook and didn't know if it was more romantic or platonic). I guess this is where it starts:
“I could keep you safe,” he rasped. “They’re all afraid of me. No one would hurt you again, or I’d kill them.” He yanked her closer, and for a moment she thought he meant to kiss her. He was too strong to fight. She closed her eyes, wanting it to be over, but nothing happened.
"after a moment the Hound took the blade from her throat, never speaking. Some instinct made her lift her hand and cup his cheek with her fingers. When she crawled out of bed, long moments later, she was alone. She found his cloak on the floor, twisted up tight, the white wool stained by blood and fire. The sky outside was darker by then, with only a few pale green ghosts dancing against the stars. A chill wind was blowing, banging the shutters. Sansa was cold. She shook out the torn cloak and huddled beneath it on the floor, shivering.”"
There's even fanart of them having sex, very bizarre to me.
Did GRRM admit this in his interviews or is it a fan-theory?
I find that, having watched HOD Season 1, my appreciation for Dany's storyline becomes a lot greater. I understand what all that hubbub about the Targayeans are, and why she is so attached to this heritage.