I dont believe that you cant love others without loving yourself first. First of all , there are different kinds of love, love is something we feel, the love of a sibling , love of a mother ect.... these are people we grew up with, lets say they were healthy relationships, then you have love for a spouse, love for a friend, love for a pet, assuming they are all healthy.

You can love, these people, and still not love yourself, to the extent you love these people I have mentioned above, because thats the way I feel, I would be one to give my life for my brother, which I love with all my being.

Then theres love for friends, therapists, counselors, ect... which is all different category, in my oppinion, these are people you develop feelings for, assuming again its healthy.

A love for a therapist, is more of a healthy attachment in process, just a feeling, an appreciation sort of speak.
If you grew up in an unhealthy childhood, these feelings are blurred, you develop an attachment and develop feelings with your t or whatever counselor lc ect... or infatuation, which are blurred and can be confused with love, because, you never knew what love meant to begin with, so its more of a need to attach, a need that was never met a want a desire, in my oppinion, thats why it has to be worked out in therapy.

Thats why the lc probably said that, but it was not the greatest choice of words, of course.