Academics think that kissing helps partners share bacteria, shoring up their immune systems and enabling them to better fight disease.

The sexual revolution has gone too far, according to a founding figure of the Swinging Sixties who says the Pill means sex is no longer about love for young girls.

A British-born Australian woman who had a child using in-vitro fertilisation fell in love with the man who was her anonymous sperm donor.

The prediction of recreational-only sex by 2050 shows up the impossible choices young women have to make.

Chinese programmer was so sick of being single that he bought 99 iPhone 6s to propose to his girlfriend. It didn't end well.

When Jamie and Louis, both transsexual, decided to marry, they also chose to allow TV cameras to record the often rocky run-up to the big day. They tell Kate Hilpern why they did it.

It is one of New York's most successful law firms, a company that has won US$3 billion ($3.85 billion) in payouts for sick Ground Zero workers, diet pill users and asbestos cancer sufferers.

Sex could become purely recreational by 2050 with large numbers of babies in the Western world born through IVF, the professor who invented the contraceptive pill says.

Society has always been fascinated by sex, and the internet gives us insight into previously unheard of sexual practices, portraying them as standard conduct, writes Lee Suckling.

15 myths about contraception - alongside the facts

Christchurch Romeo organises a flashmob on a tram to propose to his girlfriend.Here's how it went.

Mona Dotcom has staked a $23 million claim on the fortune of her estranged husband, Kim Dotcom, saying half of what was seized in the FBI-initiated raid belongs to her.

Tinder: tacky, or just a super-efficient way to meet a match in this new age of need-it-now-ness? wonders relationship expert Jill Goldson.

A Chinese woman spent an entire week in a KFC eating fried chicken wings after being dumped by her boyfriend because she "needed time to think".

What do you call yourself if your husband's surname is not Clooney, asks Chris Thundow.

Gay engagement shouldn't be any different than straight engagement (after all, that was the point of marriage equality), but it is, writes newly engaged Lee Suckling.

"A diamond is forever," according to De Beers, but if a couple spends too much on their engagement ring then their marriage might not be.

Biotech company Starpharma has announced the imminent launch of a condom coated with an antimicrobial chemical known as VivaGel.

There is no such thing as a vaginal orgasm, a clitoral orgasm or even a G-spot, a new study claims.

Watching pornography has been linked to risky sexual behaviours among teenagers, including not using condoms.

Grace Gelder proposed to herself and sealed the marriage by kissing her own mirror image.

Deborah Hart writes: Family law arbitration, the latest conflict-resolution tool for people seeking resolutions for difficult domestic circumstances, marks another milestone.