This document discusses statistics related to teen sexuality in the United States. It finds that by age 19, 7 in 10 teens have had sexual intercourse, though they are waiting longer than in the past. The most common reasons teens give for not having sex are religious or moral objections. While most first experiences for teens are with steady partners, involuntary first experiences are reported by 7% of young women. Teen sexual activity levels in the US are similar to European countries, but pregnancy rates are lower in Europe due to greater contraceptive use.