Why do we feel so down when we get a whiff of rejection? We know in our hearts that we can't like everyone who likes us - just as everyone we happen to like can't like us.

It is after 10 years together that relationships are at their rockiest, a study claims. But hit 35 and you're in for extremely plain sailing.

Bob Jones writes: Female gullibility is essential for the continuation of the species, thus we must take the bad with the good.

Living back home with mum and dad - a sensible move full of focus and strategy - or a bleak admission to having lost your foothold in the climb up the mountain of adult life'?

Is rekindled love a delicate and tender flower - or a releasing of a genie from a bottle with a warning on the label?

If you must smooch in public, here are five rules to follow, says Hannah Betts.

Regrets? The over-50s have had a few ... and one of the most common is marrying the wrong person.

I jumped the gun and got married in early November. It was a simple affair, and while we didn't set out with this specific goal in mind, the total wedding cost came in at just under $1000.

We take a look at the other halves of the world's most famous Angels.

Forget the man drought - New Zealand is suffering a friend famine.

Here are five pieces of advice for the somewhat preposterous long-distance couple, and here are the time-tested, pearls of wisdom we found

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.

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.

Where one mystery's been solved, another has surfaced. A mystery bride has been found - but she has little idea how her wedding photos came to be on a USB stick.

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".