It doesn't take more than a millisecond to know that your partner's subtly raised eyebrow across the table means, "Your dad's political diatribe is more unhinged than usual tonight." Or when your wife does that thing where she scratches her nose and sniffles—it's time to rescue her from a conversation with that guy in the beret. While some cues between a couple hold steady, others change over the course of a relationship. How you greet your husband after year one of marriage with no kids and no mortgage might be a bit different from year eight where you barely wave hello while juggling algebra homework, a goldendoodle accident and emergency calls from aging parents.

And, according to Dr. Wendy Walsh, Ph.D., Clinical Psychologist and professor at California State University Channel Islands, certain physical cues can quietly signal deeper issues in a relationship—especially as your story morphs from The Notebook to A Marriage Story. Dr. Walsh shares three nonverbal red flags to watch for in that first decade of marriage—and how to get on the right track for the next ten.

Known as America's Relationship Expert, Dr. Wendy Walsh holds a Ph.D. in Clinical Psychology and teaches in the Psychology Department at California State University Channel Islands and has been the host of "The Dr. Wendy Walsh Show" on iHeart Radio's KFI AM 640 since 2015. She is an expert at DatingAdvice.com.