Who said "I think we should see other people."?

This quote is attributed to Frank Costanza.

I think we should see other people. - Frank Costanza

"I think we should see other people."

Frank Costanza Relationships

"These pretzels are making me thirsty."

"I'm out there, Jerry, and I'm loving every minute of it."

"Giddy up!"

"The sea was angry that day, my friend."

"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."