Humans aren't the only mammals that make long-term love matches. But a study with lemurs shows not all monogamous mammals are "wired for love" the same way.

People have plenty of individual reasons to stick with or end a romantic relationship. But researchers have identified some common themes that influence this big decision.

It may be odd during the pandemic, but Valentine's Day is still important, says Justin Garcia. "We need that relationship focus more than ever right now."

Nostalgia is a powerful emotion, but we shouldn't let it take over our lives.

Dogs process the sensory world very differently than humans, but love in a way that is entirely familiar.

There may be a connection between genes involved in the opioid system and feelings of insecurity in romantic relationships, researchers find.

An expert in romantic relationships talks about the ways couples can keep relationships healthy in the time of COVID-19.

Children stay in school longer and get married later when their parents love each other, according to research with couples from Nepal.

An optimistic partner may stave off the risk factors leading to Alzheimer's disease, dementia, and cognitive decline as you grow old together.