Contrary to stereotypes, men say "I love you" first more often than women.
Gay, lesbian and bisexual individuals may not see a mental health boost in coming out if their communities are hostile to homosexuality.
New world monkeys have a different form of oxytocin than other mammals, and it might act differently too.
The latest study shows more teens are virgins these days, and more people - especially women - are bisexual.
Life's Little Mysteries explains why the less secure a clingy partner feels in the relationship, the needier they get.
Doves are a year-round symbol of peace, but are a particular romantic staple of Valentine's Day. Why are these birds so, well, lovey-dovey?
Within any romantic relationship, conflicts inevitably occur. And, as most of us are well aware, the fighting evokes intense emotions.
Parents who accept and advocate for their non-heterosexual kids may be protecting them from depression and ill heath as adults.
Among the youth of America and England, homophobia is going extinct, according to sociologist Eric Anderson.
AIDS experts are optimistic that drastic reductions in the transmission rate can be achieved in just the next several years.