A simple way to safeguard your marriage is to have regular time alone with your mate. Setting aside time without kids, without other people and just hanging out is a powerful way to show your husband he is important to you. I mention the part without other people because I know the temptation is to invite another couple to go out with you. I love people, I love hanging out with my friends and their husbands BUT you need alone time on a regular basis so that there is time to just enjoy one anothers company.
Now, don't tell me that you don't want to leave your kids with a babysitter or there is NO ONE to watch them. Ladies...LET GO! God is sovereign over your children. Yes, make wise choices in who you leave your kids with but get busy researching and find someone to help you out so you can have time alone with your husband. Ask friends, ask neighbors, look at who is serving in your church nursery, ask family, look into a credible nanny service that does background check and interview different people! There are trustworthy people out there you just have to make the effort and ask God to help you find someone.
The date night doesn't have to be elaborate and expensive. Depending if it is day or night you can...pick up fast food and take it to a park for a picnic, take a walk around a community hike and bike trail, walk around the mall and window shop, have coffee at Starbucks and just talk, go dancing, think about what you did when you were dating and just settle into your husbands lead and remember the times you thought he was "amazing, wonderful, and the man of your dreams!"
Warning: This may be awkward at first if it has been years since you were alone without your children. Take it one step at a time and you will be amazed at how showing your husband you need to have alone time with him will soften his heart and open his mouth to telling you what is in his head. I pray you all rekindle the passion you felt when you first fell in love.
PS Make sure you get yourself looking your best for him as well!