Professor Eli Finkel, author of "The All-or-Nothing Marriage," found the answer in this influential psych theory

It was the most joyous celebration I've ever seen at the White House — with disturbing undertones to follow

The bill's sponsor wants to give Tennesseans “an alternative form of marriage” for people who want to marry minors

Kim Davis became notorious in 2015 for refusing to issue same-sex marriage licenses as Rowan County Clerk

Kentucky's bill had to change to accommodate religious concerns. A similar bill is dying in Tennessee. Here's why

In South Korea, 40 per cent of people in their 20s and 30s appear to have quit dating

Her Supreme Court case, United States v. Windsor, paved the way for marriage equality

What role does marriage play in creating progress for the "War on Poverty"?

Marriage can take many forms, so why can't it be a contract that's periodically reviewed and renewed?

As one movie reveals, legal same-sex marriage has created new questions and anxieties in the LGBTQ community

Opponents of same-sex marriage claim that "elites" are foisting their values on America. History says the opposite

Despite its wide acceptance in the U.S., same-sex marriage is legal in only few nations worldwide

The new book "Winning Marriage" destroys the dangerous myth that legalizing gay marriage was ever "inevitable"

With the rise of feminist movements, the perception of marriage has been on a continuous shift

How did a marriage-equality advocate become the face of Australian anti-gay propaganda?