Reference There's a simple way to figure out the relationships between relations, including your second cousins and first cousin once-removed.
Here's what is known about human sex and sexuality in the physical, mental and emotional realms. LiveScience examines the latest psychological, biological and sociological studies on sex, ranging from dating and mating, to flirting and cheating, to birth control and STDs.
Reference Studies led by anthropologist Helen Fisher revealed that the brain's "in love" phase is a unique and well-defined period of time, and there are 13 telltale signs you're in love.
Should you break up with your partner? It's a difficult choice, but science may be able to help with your decision.
More than 100 years ago, a Russian soldier held captive in a prisoner-of-war camp engraved a beautiful scene on an aluminum canteen showing two people, deeply in love, snuggling together.
In the battle against germs, your immune system is the best wing-man there is. When it comes to dating? Not so much.
We may be a bit biased at Live Science, but we think the best Valentine's Day tweets are the science ones.
It's customary to give ravishing red gifts on Valentine's Day — think red roses, red boxes of chocolate or even your heart (figuratively speaking).
If you're feeling stressed, a whiff of your romantic partner's shirt may help you feel more relaxed, a new study shows.
In a new study, Tinder users had lower levels of self-esteem and more body dissatisfaction than people who didn't use the dating app.
Divorce is more likely when husbands disapprove of their wives' friends or think they're interfering.
The "cuddle hormone" oxytocin gets all the attention, but a new study finds that other chemicals in the brain may play even bigger roles in people's interactions with others.
This trend of single Americans has the chance to redefine the traditional meaning – and confines – of home, family and community, says one social scientist.
For Valentine’s Day, Live Science gathers together some of the more extravagant and outlandish courtship rituals in the animal kingdom.