The woman you sleep with gazes into your eyes and tells you she loves you. And you believe her. You can tell by the way she looks at you, the way she holds you, the way she seems to always know what you want before you do.
There are a couple of things in life you just know, and love and this naked woman are two of them.

But there are a lot of things you don't know.

A woman may give you her body and her heart, but there are parts that she'll never give up. Pieces woven into the very fiber of her being. Mysteries only hinted at in a passing sly smile, an inscrutable laugh. These are the secrets of lovers past, hidden fantasies, and unshared longings. A woman's deepest secrets that don't—and never will—include you.

You're about to sample this hidden knowledge. But like any man who seeks, you'd better be prepared for what you're about to find. 
1. My Best Friend Knows Everything

My best friend knows everything. She knows all of your vitals—from the size of your bank account to the size penis—and she knows how both compare with those of every other man I've ever dated. I have done a hand-comparison measurement so I can divulge size and girth with a high level of accuracy. When my friend smirks at you knowingly, you are not imagining it. She knows. So just know that she knows, and deal with it.

2. I Lie About My Number

I'll never tell you exactly how many men I've slept with. No matter how sincere I appeared when I answered your question, chances are I wasn't. As an unscientific guideline, when a woman says she's slept with four men, the real number is actually closer to seven. Her fib is partly intentional (she doesn't want to appear a whore), but mostly it's sexual amnesia. When a woman wants to pretend an encounter never occurred, she simply scraps the man from her official score sheet. Common excuses that lead to such an omission: The actual sex lasted only a few thrusts; or she was drunk or on the rebound.

3. I Fantasized About You

I fantasized about being with you at least a dozen times before we actually first got naked.

4. I Compare You to My Exes

I still think about my ex-boyfriends and compare them to you. Mostly you win. Sometimes not.

5. I Always Need Extra Time

When I say, "I'm ready," I'll need exactly 7 more minutes to get ready. Don't try to cheat the system by showing up 7 minutes later; I will still need an extra 7 minutes.

6. You've Made Me Cry

You've made me cry more times than you'll ever know.

7. I Like When You Call

I obsess about when you're going to call me again. The period of time between our first date and your "Thanks for a great night; when can I see you again?" always seems stretched into slow motion. So don't worry about looking too eager. Call. Even if you only wait until noon the day after, it will feel like a lifetime to me.

8. I Want You to Talk a Little Dirty

I want you to talk a little dirty in bed.

9.I'm Constantly Testing You

I'm constantly testing you. I observe, analyze, and judge every action, word, gesture, e-mail, and facial expression. When I ask you if you want to have a threesome, I don't mean it. If you want me to speak to you again, let alone sleep with you after this conversation, the answer should always be, "Why would I want to sleep with another woman when I have you?"

10. I Need to Know You Want Me

I need constant indications that you want me around. That's why it's better, for example, to say, "I want you to come away with me for the weekend. Could you come with me?" than to ask, "What are you up to this weekend?"