Normally cuddling is more, uh, cushiony and soft and not so—um, skeletal? Well, if you want to put the uglies into PG-rated bumping uglies, these x-ray portraits of cuddling couples from Saiko Kanda and Mayuka Hayashi of Musashino Art University do just that.

Some couples have sex to become more intimate with their partner, and some couples have sex so they don't feel guilty about not having sex. Guess who's happier.

The title of a recent Guardian article about the technological/cultural atomism and alienation keeping many 20-something Japanese men and women from engaging in intimate, romantic relationships is suitably provocative: “Why have young people in Japan stopped having sex?” Well, reader? Were you even aware that young…

We write about cancer quite a bit because, well, it's a topic that hits pretty damn close to home for many of us. However, as a society, we don't focus much on the the sexual well-being of survivors. For millions of women, though, this is a question that's of immediate interest. The Yale School of Medicine's…

Research commissioned by the Playboy channel found that women, especially younger ones, are open to watching porn if it features "real chemistry, nonenhanced body parts, varied body shapes and 'contextualized' sex. Not everyone agrees.

Author Helen Boyd, on how celibacy, monogamy and being picky (which can cause the other two) can be sexier (and more feminist) than actually doing it. [My Husband Betty, Image via Sarah G. on Flickr]

Victor LaValle's account of his two years of (almost) celibacy — alleviated occasionally by phone sex — makes the case that not getting any will drive you crazy. But actual lack of sex may matter less than just plain loneliness.

This colorful chart details the 10 levels of intimacy in modern communication from talking to Twitter. We have one gripe: shouldn't letters be higher on the intimacy scale, with their evidence of personal handling and obvious effort? [BuzzFeed]

When a friend tells you she's not yet had sex with someone, what do you take that to mean? In all truth, studies show that the two of you might be thinking very different things.

Sharing experiences of certain bodily functions are milestones in intimacy with significant others, like pooping while they're in the house, vomiting on them when you're sick, or farting in from of them. Once you can do that shit (literally), you know that you're comfortable in your relationship. But there's one final…