9. UK
As well as in Finland, the same percent of adulterous (36%), can be found in the UK, the number 9 in our list of most adulterous, unfaithful countries with highest cheating rates in the world. However, we put it higher on the list as it was repeated more than previously mentioned countries. Also, 15% of divorces in this country happen as a result of adultery according to the Daily Mail.
