As soon as you have kids,you enter a new level in marriage which is different as you know. I guess what you have to do is enjoy this new level by making the best out of it. Let's say you go out with the kids,take them to a park, have a little picnic,enjoy have fun for a long while and by the time you get to the house the kids might be tired...Good food,good bath,to bed. At this point what you have to do is make the best literally out of every second alone you have.

I don't know if I helped that much,but I tried.