Together, they're known as the 'Four Horsemen of Divorce.' Instead of resorting to these negative tactics, fight fairly: Look for places where each partner's goal overlaps into a shared common goal and build from that. There are many more reasons to have sex than just getting off."— Kat Van Kirk, Ph.

D., licensed marriage and sex therapist, expert at Adam and Eve, and Greatist expert"For long-lasting love, the more similarity (e.g., age, education, values, personality, hobbies), the better.

Relationships don’t look like they used to (and that's a good thing).

But what does it honestly take to make a modern romance work?

Let go and enjoy the journey."— April Beyer, matchmaker and dating and relationship expert"This may sound obvious, but you can't imagine how many people come to couples therapy too late, when their partner is done with a relationship and wants to end it.

It is very important to realize that everyone potentially has a breaking point, and if their needs are not met or they don't feel seen by the other, they will more than likely find it somewhere else.

Hang out with girlfriends until late in the evening, take a weekend trip to visit family, or just spend time 'doing you' for a while. D., assistant professor of communication, Texas State University"'You are my everything' is a lousy pop-song lyric and an even worse relationship plan. Create relationships outside The Relationship, or The Relationship isn't going to work anymore."— Matt Lundquist, LCSW, couples therapist"Sex isn't just about orgasms.

Then when you go home to Yours Truly, you'll both be recharged and ready to come together even stronger."— Amy Baglan, CEO of Meet Mindful, a dating site for people into healthy living, well-being, and mindfulness"Researchers have found that four conflict messages are able to predict whether couples remain together or get divorced: contempt, criticism, stonewalling (or withdrawal), and defensiveness. It's about sensation, emotional intimacy, stress relief, improved health (improved immune and cardiovascular system), and increased emotional bonding with your partner, thanks to the wonderful release of hormones due to physical touch.

Soaking up all the wisdom you can from relationship therapists, researchers, matchmakers, and more.

Here, we've distilled it down to the very best advice 15 experts have learned.

Regardless of your personal situation, their words may help you uncover the key to long-lasting happiness.