How much sex is enough? Just once a week is all it takes for optimal happiness among married heterosexual couples and those in long-term relationships.

COMMENT: You can't legislate tolerance, writes Lee Suckling.

Married men are more likely to be without close friends who can help in a crisis than those who are single, researchers claim.

A woman who was taken on a date to a cheap coffee shop was asked for a refund for the coffee when she declined to go to his place.

The one thing about 'matching' algorithms that dating sites don't want you to know.

A fed-up photographer has hit out at smartphone-obsessed wedding guests for taking 'crap' pictures and 'ruining' official pictures.

The Ministry of Education is offering schools professional development programmes to help teachers deliver sex education.

Ever wondered if your partner is cheating on you? There's an app for that.

Research proves older people are still likely to feel the spark of attraction.

Worrying news for anyone whose marriage seems a conflict-free zone: a lack of shouting matches doesn't mean all is smooth sailing, it could actually be a sign you're drifting apart.

Francoise Gilot expresses controversial views in her new book: 'About Women: Conversations Between a Writer and a Painter'.

Here is something to look forward to as those wedding invitations start arriving, where your husband is invited but you are not, Heather writes.

Although they were not endorsed by the government, forced abortions and compulsory sterilisation had been a part of China's policy since the 1980s.

Think your chance at love is lost? There are a lot of people who would like to meet you, and who feel like you do, says Jill Goldson.

How one woman's Halloween costume led her to love.

Video shows woman pretending to be drunk to see how men react - and what they do is staggering.

David Beckham taught his children manners when they were two - now he monitors them on social media.

As a study suggests that intelligence is an attractive trait only in theory, two writers from across the gender divide disagree.

A study of relationship deal-breakers noted that "natural selection has punished mating mistakes more harshly than it has rewarded quality mating choices".

OPINION: Why a performance review could be good for your marriage.

You've most likely heard of activewear, but what about Ya Ya and Normcore?

New figures contradict the assumption that pornography is the preserve of males.

They were born identical twin boys but Wyatt Maines always felt he was a girl.

Birth-order offers an appealing explanation for siblings' differences. The only problem is, it's a myth.

Heartbreaking message posted to Facebook a plea to help fix society for trans people.

After a-groom-to-be called off his wedding, the deserted bride's family decided to create something good from their disappointment.

As the weather heats up, so too is the passion in Kiwi bedrooms. One in four Kiwis say they have sex at least once a week, but that figure can be expected to rise with the mercury, a new survey reveals.