As a couple’s therapist, I would never tell anyone to get a divorce. I do believe that you can fall “out” of love and can fall “in” love again. Love is an emotion and you can find that emotion again.
An intimate relationship is more than just emotions. Staying in the relationship is a choice. I always believe this: “even when I don’t feel the love towards you, I can still choose to love you.” For me, that is the true definition of love.