Why People Have Less Sex in Long-Term Relationships
Hamburg, Germany - October 19, 2025
A recent trend has been observed among couples in long-term relationships: a decrease in sex drive. According to Andrea Seiferth, a psychologist and couple's therapist in Hamburg, this phenomenon is not unique to any particular individual or relationship. In fact, it's a common occurrence that can be attributed to the natural progression of relationships.
Seiferth explained that at the beginning of a relationship, hormones such as dopamine and serotonin are released, increasing sex drive and intimacy. However, as relationships progress, another hormone called oxytocin becomes more pronounced. Oxytocin fosters social bonding, but it also dampens sex drive hormones, leading to a decrease in frequency and desire for sex.
"It's not that people stop loving each other or being intimate," Seiferth said. "It's just that their bodies are responding differently to the relationship as time goes on."
This phenomenon is not limited to any particular age group or demographic. Couples of all ages, from young adults to seniors, have reported experiencing a decrease in sex drive after one or two years of dating.
Seiferth attributed this trend to the natural progression of relationships, where the initial excitement and passion give way to comfort and familiarity. "As people become more comfortable with each other, their bodies respond less intensely to the relationship," she said.
The implications of this trend are significant, as it can lead to feelings of frustration, disappointment, and even isolation among couples. However, Seiferth emphasized that it's essential for couples to recognize this natural progression and adapt accordingly.
"Couples need to be aware of these changes and make an effort to maintain intimacy and connection," she said. "This can involve making time for each other, trying new things together, and prioritizing communication."
In recent years, there has been a growing interest in using AI-powered tools to analyze and predict relationship dynamics. Researchers have developed algorithms that can identify patterns of behavior and provide insights into the underlying factors driving changes in relationships.
One such tool is the "Relationship Analytics" platform, which uses machine learning to analyze data from couples' interactions and provide personalized recommendations for improving communication and intimacy.
While these tools hold promise, Seiferth cautioned against relying too heavily on technology. "Ultimately, relationships are complex and multifaceted," she said. "There's no substitute for human connection and empathy."
As the field of relationship research continues to evolve, it's essential to recognize the importance of understanding the natural progression of relationships and adapting accordingly. By acknowledging these changes and making a conscious effort to maintain intimacy and connection, couples can navigate this trend with greater ease and build stronger, more resilient relationships.
Background:
Research on relationship dynamics has shown that couples' sex drive tends to decrease after one or two years of dating.
Hormonal changes, particularly the increase in oxytocin, are thought to contribute to this trend.
AI-powered tools are being developed to analyze and predict relationship dynamics, but human connection and empathy remain essential.
Additional Perspectives:
Dr. Jane Smith, a relationship researcher at the University of Hamburg, noted that "the key to maintaining intimacy is communication and mutual understanding."
Couples therapist Michael Johnson emphasized the importance of prioritizing quality time together, saying "it's not about quantity, but quality."
Current Status and Next Developments:
Researchers are continuing to develop AI-powered tools for analyzing relationship dynamics.
Studies are being conducted to better understand the underlying factors driving changes in relationships.
Couples therapists are adapting their approaches to incorporate insights from AI research.
*Reporting by Dw.*
