Psychology Today explains the links between people’s sleep habits and how they experience romantic relationships.

What does your sleep say about the quality of your relationship? In general, people are more satisfied with their relationships if they tend to sleep better. People report sleeping better when they feel close and connected with their romantic partners. They sleep worse after a fight. And now that they’ve slept poorly? People are more likely to fight with their partners and less likely to resolve the conflict if they slept poorly the prior night.

Does your sleep tell you something about how secure you feel in your relationships? From military vets to college students, people who are anxiously attached tend to get less deep sleep, show brain activation during sleep that is consistent with hyperarousal, have lower sleep efficiency (spend more time awake when they want to be sleeping), and report worse sleep quality.