Partners do not always want physical intimacy at the same time or with the same frequency. That difference can feel personal, but it does not automatically mean that love or attraction has disappeared.
Desire can change
Sleep, stress, chronic illness, medication, hormones, relationship tension and life transitions can influence sexual interest. Some people feel spontaneous desire; others notice desire after relaxation and affectionate connection. Both patterns can occur in healthy adults.
Replace blame with curiosity
Avoid labels such as “cold” or “needy.” Instead ask, “When do you feel most relaxed and connected?” and “What kinds of closeness feel good to you right now?” Remember that understanding a difference does not create an obligation to have sex.
Create options without pressure
Couples can plan shared time, affectionate touch, conversation or dates that do not need to lead to sex. If a change in desire is sudden, distressing or accompanied by pain, discuss it with a qualified clinician. A counselor or certified sex therapist may help with persistent relational distress.
Takeaway: A mismatch is a shared issue to understand, not a contest in which someone has to win.
Further reading: https://www.gottman.com/enriching-your-sex-life/