Tufts University, Massachusetts has a new rule in their student handbook. No sex in front of roommate. Boston radio had a call-in discussion with many former college students relating their stories and one caller talked about how one student had sex in front of about 6 students. Maybe it is a form of exhibitionism or maybe students just don’t have a problem with it.
This may be more prevalent in the Northeast but I’ve heard stories about the South also.