What psychologists noticed about couples who are happiest when moving in together

When romantic partners move in together, sharing similar feelings and perspectives about the transition is linked to greater relationship satisfaction. A recent study published in Social Psychological and Personality Science provides evidence that couples who align in their perceptions of this major life event tend to be happier together. However, this shared perspective does not necessarily increase over the first six months of cohabitation.

Moving in with a romantic partner represents a major life transition that both individuals experience at the exact same time. While the physical act of sharing a home is a joint occurrence, each person can interpret the experience quite differently. One person might view the transition as an exciting and highly predictable milestone. The other person might feel stressed about giving up their independent space and view the move as challenging.

“Although major life events are often experienced together with close others, such as moving in with a romantic partner, research has traditionally focused on individuals’ experiences rather than shared experiences,” said study author Karla Fliedner, a researcher in the Department of Psychological Assessment at Humboldt University of Berlin. “We were interested in whether looking at both partners’ perspectives could provide new insights into major life events and the relationships in which these events occur.”

Psychologists refer to these subjective interpretations as event perceptions. Event perception goes beyond simply acknowledging that something happened. It involves a multidimensional rating of how an event felt, how much it impacted a person’s life, and whether it changed their view of the world. By measuring these subjective feelings, researchers can gain a deeper understanding of how life transitions affect human psychology.

“Moving in together is a particularly interesting example because it is a significant transition that both partners experience simultaneously, yet they may perceive it differently,” Fliedner said. “For example, one partner may perceive the move-in as largely exciting and positive, whereas the other may perceive this event as rather challenging and stressful.”

“We wanted to understand whether partners see this experience in similar ways, how well they understand each other’s perspectives, and whether these shared perceptions are related to relationship satisfaction,” Fliedner explained.

There are theoretical reasons to expect that romantic partners might develop similar event perceptions. The Shared Reality Theory proposes that individuals are driven to create common inner states with the people close to them. People want to align their thoughts and feelings about the world for two main reasons. First, sharing a viewpoint helps a person feel confident that their own perspective is valid and accurate. Second, agreeing on how to interpret the world fosters a strong sense of social connection.

To explore this, the researchers analyzed data from 400 participants, which made up 200 opposite-sex couples. These participants were part of a larger ongoing research project called the Couple’s Personality in Daily Life study. Most of the participants were university students or young professionals in their mid-twenties. The vast majority of the couples were unmarried and had been living together for less than four weeks at the time of the first assessment.

To track changes over time, the couples completed surveys at two different points, spaced six months apart. To measure how they viewed the move, participants filled out a customized version of the Event Characteristic Questionnaire. This survey asked them to rate their experience across nine specific dimensions. These dimensions included how positive, predictable, challenging, emotionally significant, and impactful the move was.

Participants provided two distinct types of ratings on this questionnaire. First, they reported their own personal feelings about moving in together, which served as a self-report. Second, they guessed how their partner felt about the event, serving as a partner-report. The researchers also measured each person’s relationship satisfaction using a standard seven-item survey.

The data showed that partners tended to have highly similar perceptions of what it was like to move in together. Their answers aligned much more closely than those of randomly paired strangers. This overlap was not simply due to a concept known as normativeness. Normativeness refers to the idea that people might agree simply because they are following a cultural script, such as the common societal belief that moving in together is a happy occasion.

“One interesting finding was that partners were more similar in their perceptions of moving in together than would be expected based on common views of this event alone,” Fliedner said. “For example, partners’ similarity could not be fully explained by common views of moving in together as a positive and predictable event.”

To account for this cultural script, the researchers used statistical models to isolate the couples’ unique, idiosyncratic feelings. They found that couples shared a genuine alignment in their specific views of the transition, above and beyond standard societal expectations. In addition to sharing actual feelings, participants were generally good at guessing how their partner experienced the move.

When couples had a high degree of similarity in their self-reported feelings, they also reported higher levels of relationship satisfaction. Being able to accurately guess a partner’s feelings was also linked to being happier in the relationship. Interestingly, believing that a partner felt the exact same way, known as perceived similarity, was also associated with greater relationship satisfaction.

“We also found that couples who perceived the event of moving in together more similarly tended to report higher relationship satisfaction,” Fliedner said. “However, this association was no longer significant when accounting for average perceptions of this event, suggesting that sharing such common views of events may play an important role.”

The researchers tracked the couples six months after the initial survey to see how these dynamics evolved. The data indicated that this similarity in perception did not grow stronger over time. The overlap in the partners’ viewpoints remained relatively stable rather than increasing. Additionally, changes in how similarly the partners viewed the event were not linked to changes in their relationship satisfaction during that six-month period.

“Contrary to our expectations, partners did not generally become more similar in their perceptions of the major life event over the course of half a year,” Fliedner noted. “We had expected that sharing this important transition and discussing it with one another might lead their perceptions to converge over time.”

“However, we cannot rule out the possibility that partners became more similar in their perceptions of the event immediately after moving in together, before our first assessment took place,” Fliedner added. This lack of long-term convergence suggests that people might choose partners who already process the world in a similar way, or that alignment happens very quickly in the first few days before researchers can measure it.

As with all research, there are a few limitations to keep in mind. One issue is the lack of information about how happy the couples were before they decided to move in together. Because there is no pre-event measurement, it is difficult to establish a direct cause and effect.

“One important limitation concerns causality,” Fliedner explained. “Although it is possible that perceiving a shared major life event similarly contributes to relationship satisfaction, the reverse may also be true: partners who are more satisfied with their relationship may be more likely to develop similar perceptions of shared experiences. Therefore, the present findings cannot determine the direction of this association.”

Another limitation relates to the specific wording of a few survey questions regarding external control. Some participants found these questions confusing because moving in together is usually a voluntary choice, not something forced by outside people. The researchers noted this minor issue, though removing those specific questions did not change the overall statistical findings.

The specific event being studied also presents a limitation. Moving in together is just one type of shared relationship milestone, and it is an experience that both partners actively participate in. Other major life events, such as a severe illness or the birth of a child, might evoke very different reactions between partners.

“One next step is to examine whether similar patterns emerge for other major life events, such as becoming parents, as well as in other types of close relationships,” Fliedner said. “It will also be important to investigate the processes through which partners develop similar perceptions of shared experiences and whether these perceptions play a causal role in relationship satisfaction.”

The study, “Similarity of Major Life-Event Perceptions and Relationship Satisfaction Among Romantic Couples: The Case of Moving in Together,” was authored by Karla Fliedner, Janina Larissa Bühler, Cornelia Wrzus, Louisa Scheling, and Kai T. Horstmann.