Who said "The key to a successful relationship is communication."?

This quote is attributed to John Watson.

The key to a successful relationship is communication. - John Watson

"The key to a successful relationship is communication."

John Watson Relationships

"I'm a doctor, not a magician."

"You know what? I don't actually care what you think."

"Afghanistan or Iraq?"

"How did you know about the bullet wound?"

"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."