I just finished reading a really fantastic book that has a lot of ties to topics we've covered in class: Yes Means Yes!: Visions of Female Power and a World Without Rape by Jaclyn Friedman and Jessica Valenti. You can find it on Amazon for about ten bucks. It's an anthology, and while it does deal largely with feminism and rape culture, as the title suggests, I found there were a lot of really great essays that related to defining sex, the moral implications of prostitution, pornography, sex education, abortion, "virginity," sex toys, incest, and sex workers. It covers a really wide range of topics, and almost all of the essays are exceptionally well-written and academic. I just wanted to recommend it to anyone looking to continue reading about the philosophy of sex. It has been really helpful to me.
[Very lightly edited to enhance readability -TT]