This course investigates philosophical approaches to love, friendship, marriage, and eroticism in both classical and contemporary philosophy. It involves an investigation of the nature of sex and the nature of love and of the conceptual relationship between sexuality and love. Explored also are the concepts of gender and gender roles, and gender equality. Included is an investigation of social, ethical and legal controversies regarding sexual behaviour, marriage, and privacy. Metaphysical (eg. what is sex?), epistemological (can a member of one sex really know what it is for someone of the opposite sex to experience sexual intercourse?) and ethical queries (is pre-marital sex moral or immoral?) are tackled in this course.