Kang Muslim
The traditional understanding of sexual intimacy within romantic relationships has long been dominated by the assumption that solitary sexual activity serves as a substitute for a lack of partnered engagement. However, new research published in the International Journal of Sexual Health challenges this binary view, suggesting that the relationship between masturbation and shared intimacy is far more nuanced. By identifying three distinct behavioral profiles among adults, researchers from the University of Jaén and the University of Granada have provided a more comprehensive framework for understanding how individuals navigate their sexual lives while in committed relationships.
Historically, clinical psychology and relationship science have often operated under the "compensatory model" of sexuality. This framework posits that masturbation is primarily a fallback mechanism—a way to satisfy physical urges when a romantic partner is unavailable, uninterested, or when the relationship itself is experiencing friction. Under this model, high frequencies of solo sex are frequently interpreted by therapists and partners alike as a "red flag" signaling underlying relational dissatisfaction.
In contrast, a growing body of contemporary research supports the "complementary model." This perspective suggests that masturbation and partnered sex are not mutually exclusive or competitive. Instead, they can coexist as independent sources of pleasure that fulfill different psychological and physical needs. For many, solo sex is an act of self-care, a way to explore personal preferences, or simply a convenient method of stress relief that does not detract from the intimacy shared with a partner. To investigate which of these models better describes the modern romantic experience, lead author Oscar Cervilla and his colleagues conducted an extensive study utilizing cluster analysis to categorize behavioral patterns.
Methodology and Study Demographics
The research team initiated their data collection process in late 2022, running an online survey through March 2023. The study sample consisted of 1,028 Spanish adults, comprising 475 men and 553 women. The age range was broad, spanning from 18 to 75 years, providing a cross-generational look at sexual habits. To maintain specific variables, the study focused on cisgender individuals currently involved in different-gender romantic relationships.
Participants were asked to provide detailed accounts of their sexual behaviors, including the frequency of both shared intimacy and solitary masturbation. Beyond simple tallies of behavior, the researchers employed psychometric tools to measure "solitary sexual desire"—the internal drive to seek solo stimulation—and the "sexual pleasure cycle." This biological and psychological model segments the sexual response into two phases: the motivational phase (the "wanting" or drive) and the consummatory phase (the "liking" or the rewarding sensation of climax). Additionally, the survey assessed participants’ emotional reactions to their solo experiences and their general attitudes toward masturbation, specifically looking for presence of guilt or social stigma.
Identifying the Three Behavioral Profiles
Through statistical modeling, the researchers identified three distinct "clusters" or profiles that describe how adults balance these two forms of intimacy.
Profile 1: The Complementary Intimacy Group
The first group identified by the researchers aligns closely with the complementary model of sexuality. These individuals reported high frequencies of both shared sex with their partners and solitary masturbation. For this group, the two activities appear to feed into a generally high level of sexual vitality.
Interestingly, these participants scored the lowest on negative attitudes toward masturbation. They did not view solo sex as a "guilty pleasure" or a betrayal of their partner, but rather as a standard component of their sexual health. Both men and women in this category cited physical pleasure as their primary motivator. Data indicated that these individuals experienced the highest levels of physical reward and emotional satisfaction during solo climaxes. Demographically, many participants in this group did not cohabitate with their partners. This physical distance likely provides the privacy necessary to maintain a robust solo practice without the perceived need to "hide" the behavior from a live-in partner.
Profile 2: The Compensatory or "Substitution" Group
The second profile fits the historical compensatory model. These individuals reported high rates of solo sex but very low rates of partnered intimacy. For this group, masturbation serves as a primary outlet for sexual tension that is not being met within the relationship.
The motivations within this group showed significant gender differences. Women in this category tended to be older and in longer-term relationships, where natural declines in shared sexual frequency are more common. For these women, solo sex became a way to maintain their sexual well-being independently as relationship dynamics shifted over decades. In contrast, men in this profile often reported using solo sex and pornography as tools for "emotional avoidance." This suggests that for some men, retreating into solo sexual activity is a coping mechanism to distance themselves from relational conflict or emotional distress.
Profile 3: The Exclusively Partnered Group
The third group represents a departure from both previous models. These individuals reported active and frequent shared intimacy but very low to non-existent rates of solo sex. Their "solitary sexual desire" scores were the lowest in the sample, suggesting that they do not feel a significant internal drive to stimulate themselves outside of a partnered context.
This group also harbored the most negative attitudes toward masturbation. The men in this category were generally older, potentially reflecting more traditional or conservative views on sexual behavior where intimacy is strictly defined as a shared act. The women in this group reported that they began masturbating much later in life than women in the other two groups, or in some cases, not at all. For this profile, sexual satisfaction is derived entirely from the relational context.
Chronology of Sexual Development and Living Arrangements
The study highlighted that the timing of sexual milestones plays a critical role in shaping adult behavioral profiles. For instance, women in the "Complementary" group—those who enjoy both high shared and high solo sex—generally began exploring masturbation at an earlier age. This early self-exploration may foster a more positive and shame-free relationship with one’s own body, which then carries over into adult romantic life.
Conversely, the "Exclusively Partnered" group’s late start or lack of solo exploration suggests that social and cultural upbringing may deprioritize solo sex in favor of partnered acts. Furthermore, the researchers found that living arrangements were a significant predictor of which profile a person might fall into. Living Apart Together (LAT)—a term for couples in a committed relationship who maintain separate residences—was more common among the "Complementary" group. This suggests that autonomy and physical space may actually encourage a more diverse and active sexual repertoire.
Implications for Psychological Health and Relationship Counseling
The findings of this study have significant implications for the field of sex therapy and relationship counseling. For decades, the "compensatory" view has led many to believe that if one partner is masturbating frequently, the relationship must be failing. This study proves that such an assumption is often incorrect.
In the case of the "Complementary" group, high rates of masturbation are actually associated with high levels of sexual desire and satisfaction within the relationship. For these individuals, masturbation is an indicator of a healthy, high-functioning sexual drive, not a lack of interest in their partner. Therapists can use this data to help couples reduce the shame or jealousy often associated with solo sex.
However, for the "Compensatory" group, the study confirms that solo sex can indeed be a symptom of relational gaps. When men use solo sex for emotional avoidance, it highlights a need for better communication and emotional regulation skills within the partnership. When older women in long-term relationships turn to solo sex due to a lack of partnered intimacy, it may signal a need for couples to re-evaluate their shared sexual goals and find new ways to connect.
Limitations and Future Directions
While the study offers a groundbreaking look at sexual profiles, the researchers acknowledged several limitations. The data is cross-sectional, meaning it only captures a single moment in the participants’ lives. It cannot definitively prove that a change in relationship satisfaction causes a shift in masturbation habits; it only shows that these things are correlated.
Furthermore, the study focused exclusively on cisgender individuals in different-gender relationships. The researchers noted that expanding this framework to include LGBTQ+ individuals and non-binary gender identities is essential for a truly holistic understanding of human sexuality. Different social pressures and norms within these communities could result in entirely different behavioral clusters.
Finally, the reliance on an online survey may introduce a "self-selection bias." Individuals who are comfortable discussing their sexual habits in an online format may be more sexually liberal or self-aware than the general population, potentially skewing the results toward more positive attitudes regarding masturbation.
Conclusion: A New Framework for Sexual Health
The study by Cervilla and his colleagues marks a pivot in how researchers view the intersection of solo and shared sex. By moving beyond the "either-or" mentality of the compensatory model, the research acknowledges that human sexual behavior is driven by a complex mix of internal desire, external opportunity, and personal attitudes.
As society continues to move toward a more sex-positive understanding of health, the recognition of masturbation as a valid and often complementary component of a romantic relationship is vital. Whether an individual uses solo sex to enhance their shared intimacy, to navigate a period of relational distance, or chooses to forgo it entirely in favor of partnered acts, this study suggests that there is no single "correct" way to balance these two forms of human connection. The key, it seems, lies in the alignment of one’s habits with their personal values and the specific needs of their relationship.
