8) Spain (39 %)

Even though Spanish women are hot, Spain is in the bottom five in this list because many people in Spain are religious. They adhere to conventions that discourage extramarital affairs. Many Spaniards are Catholics, so it is natural for them to frown upon adultery. However looking at the high divorce : marriage ratio of over 60, one can guess that people are ending one relationship before starting another.

7) Belgium (40 %)

Online dating community and social networking service Gleeden is the favorite website of Belgian married men and women seeking hookups. It has 1.1 million members. One Gleeden advisor said that having a lover is a norm and is no longer a secret. According to him a mistress is the ultimate antidepressant.