Related by context. Frequent words. (Click for all words.) 49 sexually active 48 STDs 46 heterosexuals 45 monogamous 45 STIs 44 abstinence 43 anal sex 42 virgins 42 heterosexual 42 intercourse 41 sexually transmitted infections 41 circumcised 40 bisexual 40 premarital sex 40 sexually transmitted infection 40 chlamydia 39 uninfected 39 unprotected sex 39 risky behaviors 39 sexual intercourse 38 HIV infection 38 HPV infection 38 monogamy 38 sexually transmitted diseases 38 Abstinence 38 chastity 37 teen pregnancies 37 signers 37 HPV 37 tenofovir 36 HIV infections 36 givers 36 binge drink 36 celibate 36 grantees 36 donors 36 contraception 36 pledges 36 genital herpes 35 virginity 35 condom 35 evangelicals 35 oral sex 35 gonorrhea 35 Chlamydia 35 circumcision 35 teen pregnancy 35 couples 35 Pap smears 35 Mormons 35 ejaculation 34 hetero 34 condoms 34 nonsmokers 34 unintended pregnancies 34 GLSEN 34 STD 33 binge drinkers 33 celibacy 33 HIV prevalence 33 churchgoers 33 pregnancies 33 promiscuous 33 signatories 33 menstruation 33 females 33 sexually transmitted disease 33 vasectomy 33 marriages 33 divorcees 33 unintended pregnancy 33 heterosexual couples 33 funders 32 unplanned pregnancies 32 urinary tract infections 32 cohabiting 32 teenage pregnancies 32 chaste 32 human papillomavirus HPV 32 orgasms 32 registrants 32 human papillomavirus 32 unwanted pregnancies 32 menopausal women 32 Truvada 32 married couples 32 unmarried 32 recipients 32 Evangelicals 32 sex 32 faithfulness 32 vaginal 32 HIV 32 Condoms 32 syphilis 32 erections 32 participants 31 donor 31 HAART 31 microbicide 31 smokers