Who said "The Starks were kind to me. I repaid them with betrayal."?

This quote is attributed to Theon Greyjoy.

The Starks were kind to me. I repaid them with betrayal. - Theon Greyjoy

"The Starks were kind to me. I repaid them with betrayal."

Theon Greyjoy Relationships

"I am the Prince of Winterfell. I have no need to prove myself to anyone."

"What is dead may never die."

"You can't marry her. You're promised to me."

"I'm a Greyjoy. We do not sow."

"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."