Where are the sapphic books with passion and fire—but without teenagers or midlife crises?

Is it just me, or are most sapphic books either about high school/college girls or women 50+ having a midlife crisis? Where are the stories about women in their 30s-40s who are still passionate, still sexy, and still have fire? I need books where the drama is about tension and desire, not just existential reflections. Does anyone else feel this, hah?