Not surprisingly, as the number of romantic relationships increased, the likelihood of having first sexual intercourse also increases (Bearman & Brückner, 1999). Specifically, national cross-sectional analyses show that school-age teens who have had a romantic relationship in the past 18 months were more likely to have had intercourse (Blum, Beuhring, & Rinehart, 2000; Halpern et al., 2000). Additionally, males and Hispanic females who had ever kissed or "necked" were more likely to have sex than respondents who had not ever kissed or necked (Blum, Beuhring, & Rinehart, 2000). Among black females aged 12-19, intending to go steady with the first or next partner increased the likelihood of having a sexual experience (Lock & Vincent, 1995).