-hiking
-volunteering together
-taking a cooking class together
-a nice picnic by a lake
-sight seeing depending on how close you are to another state, <--for me this is very do-able as i live smack dab in the middle of 5 different states
-take a dance class together
-Go to Starbucks---seriously, you can get to know someone very well over a simple cup of coffee/tea/mocha etc
-attend a festival during spring/summer months
Alot of it does depend on what you two enjoy. We go antique and used-furniture shopping, to flea markets, look at real estate, etc. We go to parades and out for coffee. We go to parks, play in the snow, etc. We do alot of stuff based on the season.
Circus
Carnival
Race track
Laser tag
Museum
Inside ice skating
Indoor rock climbing
Ceramics or a plaster fun house where you can make and/or paint your own items
zoo
tea house
festivals/street fairs
museum
in the fall: apple picking, hayrides or haunted houses
cirque du soliel
botanical garden
casino
opera
plays
concert
pottery class or any other arts or crafts
picnic in the park
amusement park