Walking
Take a Romantic Walk
It may seem a little on the simple side but when was the last time you took a break from the rat race and slowed things down a bit?
Take some time to stop and smell the roses, literally while going on a romantic walk together, hand in hand.
Pick a nice scenic area convenient to where you live, some suggestions might include the beach, a park, the farmers market or maybe a short after dinner walk through your neighborhood .
You can also combine a some of the ideas with your walk, for example you can walk through the farmers market to get fresh items to make a romantic dinner for two or you could bring some wine and snacks and walk to the perfect picnic spot. 
Be creative and find a way to incorporate something you and your date would enjoy into your walk.