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1. Make sex a priority
Don't think of the deed as a chore. Sex is a great way to connect physically and mentally. It also helps boost your libido (more sex!), fortify your immune system (source), and helps with anti-aging. (source)
Not from each other, but from the rest of the world. While you don't have to resort to extreme measures like going to a secluded place, where the connection's sketchy and you're far removed from the rest of world, you can spend a weekend away from your phone, laptop, and other devices. This will help you focus on one another, and connect better.
See also: Do this one thing for better sex
3. Bare it all
Like scheduled sex, arrange for one or two nights in a week, where you both sleep in the nude, or with just your underwear on. This increases your chance of skin-on-skin contact, which can lead to a more active sex life.
4. Try something new
From sexual fantasies to playing dress up, the possibilities are endless. Just make a list of the things you both want to try and pick a time and place to do so. Do note though, that if you're uncomfortable with trying certain things, it's better to voice them out than to keep it in.
5. Have sex at least once a week
According to the Society for Personality and Social Psychology, a happy couple should be having sex at least once a week, which will help lead to more romance, as well as a more intimate connection between the both of you.
See also: 6 tips for great honeymoon sex