Love can last a lifetime, says a recent insight, as opposed to the popular belief that love wanes with time.
Researchers at Stony Brook University in New York have found that people can be as madly in love with each other a couple of decades into marriage as they were when they met, reports CBS News.
They conducted brain scans on couples in the early and long-term stages of relationships.
"The more colour highlights (on the scan reveals) the fact that there is a greater attachment that's built. Attachment areas grow over time," she added.
"Love can last much longer than we really thought about because their divorce rate is so high. So I think this is really hopeful that maybe love is equally long-lasting," said Hartstein.
'Early Show' co-anchor Jeff Glor said one important part of the study was that long-term couples who said they were madly in love still have sex frequently.
So how important is sex in a relationship?
"Sex is important for lots of reasons. We know there are actually a physical health benefit, mental health benefit, and most importantly, keeps you connected to your partner. And that's only going to build passion and positive feeling towards the other person," said Hartstein.
But beyond sex, she said it is communication that makes a relationship last.
"You have to keep the communication open, working on keeping the connection together and appreciating one another," she added.