T.R.
Hi J.,
I would definately agree with trading off babysitting with another family. That way you and your husband can be alone to chat & re-connect, without the kids. If you are on a small budget you can make plans to see a matinee movie (usually 1/2 price before a specific time).
There are a lot of free & low cost activities happening everywhere all the time. Do some research online, pay attention to community events. Here are some websites to get you started --
1) Free days for the Denver Zoo, Denver Museum of Nature & Science, Botanic Gardens, Performing Arts, Art Museum, Railroad Museum http://www.scfd.org/freedays.shtml
2) Moxie Moms - type in your city/state for local event happening coordinated by local Moms http://www.moxie-moms.com/index.php
3) Check out Go City Kids http://www.gocitykids.com/?area=191
I really hope this helps. Feel free to send me a message anytime.
T.