Yes, I've told my voice movement therapist that I love her. The first time she was holding me when I said it, and so she just held me even tighter and after a while just said,"Thank you." but like she really meant it.
Since then she's said it back to me. I'm so grateful I found someone who's able to hold those strong feelings. And as others have pointed out, it's true for me too that her actions speak so clearly even if she hadn't said it back, it's clear she loves me.