Try at least once a week to get a sitter for an hour or two and go for a hot chocolate or coffee or ice cream. You need alone time together too! If once a week is impossible try for bi-weekly, at least once a month.
You need alone time with each other to connect. Make a rule to NOT talk about the kids. You'll soon discover it is very hard to do. Just enjoy each others adult conversation, look into each others eyes -- you've both come along way! Conjure up new goals for the year for your growing family.
Getting out even if it is for a cup of coffee or hot chocolate