In the multivariate analyses, the variables that independently raised lesbians' likelihood of having had a male sexual partner within the past year were young age, low income, nonwhite race and not having graduated from college. The six months I kept it in were a nightmare. The interviewer handed the respondent a computer and earphones and stepped away to provide privacy while the respondent keyed answers into the computer. A few weeks into dating, I had an IUD inserted, which was one of the most painful experiences of my life. Indeed, both lesbians and gay men are likely to have men as their first sexual partners, according to research conducted by Karin Martin and Ritch C. In this sense, behavior is roughly consistent with sexual orientation. The graph below shows the percent of each gender that identify as heterosexual but report having had a same-sex partner ever, and in the last year. And yet I still catch myself nervously glancing around when he takes my hand, before I remember that we blend in as a straight-passing couple. Lesbians younger than 50 were significantly less likely than older women to have done so 0. We generated two different measures of sexual behavior from various questions in the survey. Thus, they are more likely than men to have what could be seen as mismatches between identity and behavior. Those for me can exist happily together. I could get laid without fear of catching that big, scary, incurable STI: Unsurprisingly, this consistency between current identity and behavior is much stronger when the behavior being asked about is in the last year rather than over the whole lifetime.