I'm in the U.S. In the entire western world, Europeans are relatively open and Americans are conservative(religion), especially in the conservative states. However, although young people are more likely to be sexually open minded, but not that open compared with Europe as well. What you saw existing only in films. After coming to the United States, you are supposed to experience the cultural shock for a period of time and than get used to it(I literally mean get used to it instead of overcoming this problem. Most Asian international students coming to this country after high school cannot actually get involved in the new culture after all.).
我在美国。对于整个西方世界来说，欧洲很开放，美国很保守（清教徒），尤其在美国保守州更甚。美国年轻人相对开放，但相比欧洲的疯狂来说，还是很保守的。你看到的只有在影视作品里才有。来了美国以后，你会先经历一段时间的Culture Shock, 然后慢慢适应（是适应了，而不是克服了。大部分高中以后来的中国人都克服不了文化障碍）。