What is promiscuity?

How do you decide whether to have sex?

What is sexual behavior

Sex education for teenagers

My period has been delayed for a long time (about ten days), and my boyfriend and I have extra-vagin

I had sex with my boyfriend through my underwear and he ejaculated. Can I get pregnant?

If I have sex during my period, does that mean I can't get pregnant?

If my boyfriend ejaculates inside me while I'm on my period, will it lead to pregnancy?

My older kid is secretly watching porn! What should I do?

A 6-year-old boy loves to learn the intimate moves on TV. How can I change him?

How to deal with a boy in the senior class who brings his mother’s underwear to school?

A 6-year-old girl has been touching her genitals frequently lately. What should I do?

What should I do if my child masturbates?

变换性姿势，性生活更精采！

Will sex harm the fetus?

Does orgasm cause contractions?

Understanding the four stages of orgasm

Dyspareunia or Painful Sexual Intercourse – Causes, Symptoms and Treatment

How to tell if a woman has orgasmed

What are the characteristics of female orgasm

Is delayed male orgasm a disease?

How can couples orgasm simultaneously during sex?

Why do I have a headache after orgasm?

Is orgasm really that important?

Why men don't like women faking orgasms