Sex isn’t what it used to be. Or at least our thinking about it isn’t. That’s a very good thing. The 21st century has ushered in more expansive notions of sex, sexuality, and relationships, from a total lack of interest that is totally normal, to a healthy and consensual interest in non-monogamy – and much more. Here’s a collection of articles on these topics. Collections on other topics relevant to single life are here.

Some basics about what’s “normal”

What counts as normal?

Sex drive? There’s no such thing

Asexuality and aromanticism

ASEXUALS: Who are they and why are they important?

Asexuality is a sexual orientation, not a sexual dysfunction

Biased against asexuals? Let me count the ways

Asexuality in history, popular culture, psychiatry, and everyday life

So long, compulsory sexuality! See ya, Viagra! Asexuality is here

For asexuals, gays, and lesbians, adolescent romance is especially depressing

Asexualities: First ever collection of scholarly essays

The boldest new idea about sex

That’s so aromantic!

People who are aromantic: Are they targets of bigotry?

Beyond monogamy

Are monogamous relationships really better?

Satisfied? Jealous? On deciding not to be monogamous

Is polyamory bad for the children?

7 kinds of marriage – and 1 awesome alternative

Keeping marriage alive with affairs, asexuality, polyamory, and living apart

The proliferation of life choices and the resistance that follows

Kristen Bernhardt on the relationship escalator, relationship anarchy, and what it means to be agentically single

Elizabeth Brake on minimizing marriage and amatonormativity

Also relevant

Committing to celibacy: Is that really a thing?

Social scientists discover that single gays and lesbians exist

The truth about infidelity: How often romantic partners cheat on each other

Teen dating and sex hit record lows for recent decades

7 reasons why young people are having less sex

Teens Who Don’t Date: Socially Behind or Socially Skilled?

Dark adolescent romance

Pining for romance? Young adults who aren’t are doing better

Sex: Is it more of a problem for people who are single?

The many ways to be agentically single (guest post by Kristen Bernhardt)

What you miss by doing what everyone else does

Does sex really matter? Or, why do so many social scientists only study romantic relationships?

PT blogger answers my questions about sex, single parenting, Steve Pinker, and stupidity

60 sex-relevant terms you may not know – and why you should

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