Hey M.,
Sounds like we all know how you feel! Don't freak out. Everybody goes through phases like this and it always seems worse until you get a plan of action going on how to fix it.
Never stop dating each other. Thats the best thing I can say. I think going on a date once a week, sometimes twice a week - is crucial. You don't even have to spend any money. We leave the kids with their Grandma (which she adores) and we hit the beach or the park, go back home for a nice quiet evening alone, take walks together, work out in the yard together without worrying about who is where, who hit whom and who is wrecking the house. When you do want to spend a little money - there are all the obvious choices for dates - restaurants, movies, plays, ballet, concerts, coffee houses, wineries, bars, etc...
Start dating again. Really. Ask him if you can take him out. Arrange all of it. It will surprise him (don't wait for him to do it because you'll be waiting a long time, and then you'll get upset. You were concerned enough to post this question, so take the initiative girl!)
Depending on how old your kids are, and how much money is within budget - plan something really nice. Arrange for care for the kids. If you can afford it (we can't) make dinner reservations at a place you think he'll like, or you know he likes. If you don't have the money (like us) arrange for childcare with a relative or friend that you can pay some other way (watch their kids another time) - go buy a bottle of wine for about $10 and blindfold him and take him to the park or to a lake, or seaside if you live near the ocean. Pack a picnic, take a few blankets and just hang out together.
There's lots of things you can do. The sex will happen when the attraction comes back, and the attraction will return once their is romance again. And Romance only comes from being kind, thoughtful, selfless and most importantly - light hearted. Lighten up! It'll be alright!
Go for it! And have fun!