Transsexual sexuality refers to sexual and romantic behavior of transsexual people, and is a complex interaction between identity and attraction. Characterizing a transsexual person as heterosexual or homosexual is problematic. Historically, clinicians labeled transsexual people as heterosexual or homosexual relative to their birth sex, but most transsexual people find this offensive and define their sexual orientation relative to self-defined gender identity. For example, a transwoman attracted to other women would self-identify as a lesbian, not as a heterosexual man. To avoid confusion and offense, the terms gynephilia (attraction to women) and androphilia (attraction to men) have been proposed.