Cute grandparents are devoted to 2 things: Each other and In-N-Out

If you are looking for relationship role models, don't turn to celebrities. Turn instead to these grandparents who have been married for 53 years. While they've probably figured out many of the keys to a successful marriage in those 53 years, we'd like to think that number one amongst them is their love of In-N-Out, the California burger chain.SEE ALSO: The story of this elderly couple's 65-year marriage will move you to tearsThey go therea lot. And they have the photos to prove it. Everyti