The Phillipines
One of the most memorable trips that I have ever taken with my wife was back in 2005. We went to the island of Cebu (among others) in the Philippines. While the week and a half long vacation was filled with many amazing memories none of them are quite as fond as the two days we spent on the island of Bohol. There they had some of the most amazing white sand beaches as well as some of the best diving I have ever done in my entire life. Needless to say, I would go back in a heart beat.