It's hard to relate to someone who has such wild/extreme 'mood swings'. [=someone whose mood changes very quickly]
She turned down the lights and lit a candle to create a more romantic 'mood'. [='atmosphere']
I'm sorry. I'm just not 'in the mood to talk'. [=I do not want to talk to anyone right now]
(..) aren't you, Clegane? You want some rum? Don't like that shit. It's too sweet. Why are you always in such a foul mood? Experience. This seems like a good place to spend the night. These people don't want us here. - Seems deserted to me. (..)2017 TvShow: Game of Thrones Title: Dragonstone Season: 7 Episode 1