Americans are very private, and value their personal space. ..I am not saying this is true for ALL Americans but feel 80% fall in this category. They won’t invite you to their house for a title of coffee and chit chat unless they know you really well. No inviting co-workers over and stuff like that. Again coming from the East, I found that a bit unbelievable but once I lived here, it dawned on me that this aspect was true. Back home we invited our neighbours and co-workers for all kinds of functions or for just chit-chat/gossip.
High school kids and pre-marital sex: I saw and read of this in the title movies, but always thought, eh..the movies just want to sell more of their stuff by peddling nudity and sex scenes. Boy, was I wrong… in college we had designated areas across campus where the students could pick up free condoms, talk freely with resident counselors about birth control, and most of my American friends had lost their virginity by 18, the more ambitious ones losing it by age of 16. And even in their early to late adulthood, they are free to experiment and try out numerous partners sexually before deciding to get married with “The One”.