Want to reignite the sexual fire in your relationship? It may be time to hit the road. A survey by the U.S. Travel Association found a weekend vacation is more likely to spark romance in a relationship than giving a material gift. Of the 1,100 American adults surveyed, 72 percent reported that traveling improves their sex life and strengthens their romantic relationship. Yet, the New York Times bestselling book The Normal Bar reports that 75% of all American couples have never taken a romantic vacation.