Who said "I have learned that loyalty is a luxury."?

This quote is attributed to Lannister.

I have learned that loyalty is a luxury. - Lannister

"I have learned that loyalty is a luxury."

Lannister Relationships

"A Lannister always pays his debts."

"I am the god of tits and wine."

"You are an awful man."

"I drink and I know things."

"The key to a happy marriage is communication."

"Marriage is about compromise and understanding."

"Life's greatest treasures are relationships."

"Trust is a luxury I can't afford."