Sexologists note that in almost all long-term couples, sooner or later, a difference in the level of desire will manifest itself - this is not a sign of "failure" of the relationship, but a statistical norm.
“Spontaneous” vs. “Responsive” Desire According to research by sex therapist Rosemary Basson, there are two main types of desire — spontaneous (arising spontaneously, often more common in men at a younger age) and responsive (arising in response to already-initiated intimacy, more common in women). Both are equally normal — they’re just different mechanisms.
Why it becomes a “problem” When one partner expects spontaneous desire from a partner who has a responsive type, a misinterpretation occurs—“I’m not attractive” or “I don’t love you anymore”—when in reality it’s just a different system at work.
The Dynamics of the “High Desire” and “Low Desire” Partner Sex therapy often talks not in terms of “normal” and “abnormal” levels, but rather in terms of “high” and “low” desire partners in a relative sense—using this framework reduces the blaming of one party.
The Value of Planned Intimacy Instead of expecting spontaneity, planned intimate time (which can begin with caressing rather than sex) allows the responsive partner to allow desire to “start” during the process, not before.
Compromise techniques Alternative forms of intimacy (ejaculation, massage, mutual masturbation) can be a compromise solution on days of low desire — neither partner is forced into an “all or nothing” choice.
When to Get a Professional Involved If differences are causing ongoing tension and conflict, working with a couples sex therapist can help both parties understand the other's perspective and find a mutually acceptable path.