What's a "boyfriend" or what's a "girlfriend?" It all depends on what you and yours decide it's going to mean and what works best for you.

I'm writing this because someone told you that you can't understand or experience love at your age. If no one did yet, they probably will soon enough. I'm writing to tell you that if you've heard that, I just don't think it's true.

It’s typically assumed that sex and gender are the same. They’re not. What's gender all about, then? What is the range of gender and gender identity, and how does gender impact our lives and how we live them?

Puberty is the process of physical changes and sexual maturation leading to sexual maturation as well as complete body growth. During puberty, your whole body goes through growth spurts until it has become physically mature in terms of bone mass and size, and the sexual organs and secondary sexual characteristics develop and mature. Chances are, if you're at this website, you have likely already started puberty.

Throw a rock at any sex education site or service, ask what the most common question we get is from men and we'll all tell you that it's about penis size. We don't imagine with this piece we'll never get asked again, but we're hoping these answers get you guys better filled in so you can feel good about yourselves, your penises and whatever you do (or don't) do with them.

There's nothing wrong with masturbation. Come on, say it with me: "there's NOTHING wrong with masturbation."

If you’re a guy, even though you're not the one who can become pregnant, you still get choices, and you still should participate in birth control use and responsibility just as much as a female partner. Have a look at how you can do your part.

Rape is often framed as about women, but it's not. Something done TO us really isn't about us. It's the things that we choose to do which are about us, which is why it's such an error for rape to be framed as a women's issue or about women: it's almost always a men's issue and really about men. Find out what men need to know about rape and rapists, what you can do to be sure you have consent with sex, other ways to help with rape prevention, and why your help is so important.

When breakups do happen, as they almost inevitably will, they are rarely painless. Guys in particular are often surprised by how badly the end of a relationship can hurt, and are particularly vulnerable to feeling isolated, lonely, and without anyone to turn to to process through that pain.

If we look at our sexuality one way, it looks a million times simpler than it actually is. If we look at it another way, it appears a million times more complicated. While it's important that we bear everything in mind we need to in terms of infection and disease, birth control, our relationships, our bodies and the whole works, now and then we need to remember the bare bones and the human element of the thing, and keep the essentials in the forefront of our minds.

Keeping up-to-date with your annual general and sexual health checkups with your healthcare professional is key, but so is the preventative care you can manage all by yourself. Find out how!

You're forgiven if you think that even a little difficulty in this department means that you should start stocking up on Viagra. There are a number of falsehoods about ED floating around from schoolyards to saloons.

The primary author of this article is Malcolm Gin, a 31-year old intergendered person - a person whose genetic sex is neither male nor female. Malcolm is a successful professional in the computer industry who lives in Boston with a couple of cats and a long-time girlfriend who helped to edit this article. In this article, Malcolm explains a great deal about sex, gender, gender identity, and what you can do if you find out (or worry) that you might not be "normal" in terms of your own gender identity. Read on, and find out what it's like to be a "boy" who isn't actually a boy, and what life is like for people with non-standard gender identity.

What IS pornography? Why do people use it? Should I like it or not?

Am I blue? Find out what "blue balls" are really all about: the facts may surprise you.

For a long time, I've been hearing about something called a circumcision, and I know it has something to do with the penis, but I'm not quite sure what happens to the penis during the process. Can you please explain it to me?

I was wondering if hanging weights from my penis and using elastic bands to stretch the penis really do increase length, and at what age does the penis stop growing? 16? 18?