Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_25664518_3 (first_couple VARCHAR, fourth_couple VARCHAR)
### Question:
Who was the first couple in the episode having a fourth couple of Sammy and Nat?
### Answer:
SELECT first_couple FROM table_25664518_3 WHERE fourth_couple = "Sammy and Nat"