Renew your wedding vows. It doesn't have to be anything elaborate. You can even surprise your children. Just tell them you have something planned for this Valentine's night. When the time comes, repeat the same vows you took on your wedding day, or use different words. The point is to show each other and your kids how committed you are to your marriage. Finish up the evening showing them your wedding album or video. Make renewing your vows a family affair. Here are 20 more romantic Valentine's Day ideas.