I'm pretty sure I had (maybe still have a bit of) genuine love for ex-marriage counselor. Some platonic, some not. Current T keeps comparing my rupture/termination to him to a romantic breakup, and I can't really contradict that. I don't feel it was just transference--I think it was stuff in the room, the present relationship. Sure, some stuff from my past came into play (but as Echos said, that's the case for all relationships in life, not just therapy), but the love felt genuine. The pain certainly did...

ETA: I also cared about him deeply--it wasn't just about what he gave me, but what I wish I could give him. When his wife passed away, it was like my heart broke for him. I think that reaction also is more suggestive of love.