"Public attitudes toward the morality of extramarital affairs in the four Western countries polled show great variation. [...] Forty-seven percent of the French, 35% of Germans, and 18% of Britons believe that married men and women having an affair is morally acceptable, compared with 7% of Americans and 4% of religious Americans."
[url]http://www.gallup.com/poll/107518/Religious-Americans-European-Muslims-Common-Ground.aspx[/url]
I'm not saying they LIKE it, but they ARE more tolerant in Europe. I'm surprised you are arguing about this... many Europeans pride themselves on not being as "puritanical" as Americans.