This is one among the rare times when I strongly disagree with the Dr.: to me she seems triggered and projecting some issues of her own, and she's assuming quite a sexist stance: the woman is right no-matter-what, and the man is entirely at fault (a standard toxic feminist attitude).

- First, would the Dr. be so judgmental and abrasive if gender were reversed? Would she freely throw the accusation of narcissism? I very doubt it.

- Second, the reader herself admitted being an “average looking woman”. Nothing bad, of course: aren't most people "average" by definition? So her partner "not lusting after her" might be justified; he might have chosen her for other qualities besides looks.

- Third, the reader admits "I’ve very clearly submerged this [sexy] side of me from his view": how on Earth is the partner fault when SHE has hidden that part of her from him...?!?

- Fourth, in long-term couples the woman often loses sexual interest towards her partner, but we don't accuse those women of narcissism or other stuff. The heart wants what the heart wants.

- Lastly, this woman seems suffering from a low self-esteem issue that has little to do with her partner; it was probably there before. Hence, a good therapist would advise such a person to explore in therapy her issues, sharing with her partner her fears, and pursue together a better level of intimacy. ONLY IF these attempts would fail, then leaving should be considered.

IMHO, the advice in this article doesn't sound coming from a balanced and rational therapist, but from someone whose issues have been triggered.

(I might be entirely wrong, of course :-)