Get Away From the Distractions
When you're having an important conversation, make sure there are not any distractions or things to disturb the conversation. Your significant other is important and when they have something to talk about, you should give them your undivided attention. If one person is trying to have a serious conversation and the other is occupying their time doing something else then they may miss something important.
If you have children, it may be hard to get away but make every effort possible because you're a couple and need to discuss certain topics alone - especially if it's about the kids or issues you're having.