We can thank modern science for all the extensive research that’s been done on how to have a happy relationship, because it teaches us a lot about what keeps people in love — and what makes them fall out of love. For example, we’ve even recently learned that divvying up household chores in an equal, non-gendered way is one thing that keeps couples happy and more sexually active. Who would’ve thought?! Let’s see what else makes the list.

1. Think positive thoughts

It sounds impossibly corny and like something straight out of a psychology handbook, but staying positive is proven to make everything better in life — your career, your social life, and, yes, your relationship. Positive thinking can even change the rhythmic beating of your heart.

2. Argue in a healthy way

Studies show that couples with poor communication skills are some of the most unhappy people on the planet. No surprise there, though. Every single couple fights, so don’t feel bad if you fall into that category. It’s not about how often you argue, but how you do it that really affects your relationship.

3. Don’t fight about money

This is a tough one, because money issues are the number one reason couples break up. There will always be some differences in the way you handle money, how much money you make, how much money you save, etc. However, try to solve the problems at hand instead of blow up in each others’ faces about it.

4. Say words of encouragement to each other

By evoking phrases like “great job!” and “I’m so proud of you,” couples increase their happiness levels and report feeling less depressed. All it takes is saying three of those phrases once a day for one week before you feel the effects!

5. Have strong friendships outside of your relationship

Your whole life shouldn’t be only about each other. As soon as you start to rely on your partner to provide you with everything you want and need in life, you’re bound to crash and burn. Studies show that the weakest relationships are the ones where both parties share the same number of mutual friends. So go make new pals on your own!

6. Spend six more hours together a week

Studies show that couples who clock in an extra six hours of together time every week, compared to the average relationship, are more likely to make it to the finish line. You might be thinking, Um, that’s, like, a whole night of sleep. Not so fast. You don’t have to pull an all-nighter to improve your relationship. It just takes small gestures every day to keep the romance going.

7. Don’t rush into anything

Researchers found that the longer a couple dates before getting married the more likely they are to stay together. It pays to take your time, really get to know each other, and don’t put pressure on one another to commit to anything too soon. Along the way, remember to check in and see where your partner’s at. The more you invite their opinion, the easier it is to have healthy communication.

8. Talk to each other more often

It’s reported that the happiest married folks spend about five hours every week hanging out and just talking. Yes, that’s all! Just chatting!

9. Laugh more in each other’s company

Research suggests that couples who engage in “shared laughter” are more satisfied in their relationship and they find it easier to remember all the good they’ve got between them. As soon as you get the laughter rolling you might feel closer than you did before.

10. Share new experiences together

Travel somewhere new, try a dance class, jump out of a plane together, whatever! Experts call these experiences “self-expanding activities” Couples who grow together and mix things up every now and then are the ones who are stronger in the long run.