I think this sort of argument is inherently troublesome because it assumes that our experience of consciousness is totally unique and no non-human animal shares any part of it in any amount. If you fail to draw that line precisely between humans and everything else, then you can't draw it anywhere else either. I think it is not possible to do the former (some animals clearly demonstrate significant cognitive capabilities), so it follows that there
is no line that can be drawn.
I think it is good to keep in mind that the majority of non-human animals likely see the world through a very different lens than we do, but I think we must also keep in mind that we are related to the rest of the animals and not maybe as special as we think we are.
Also, the idea of "anthropomorphizing" emotions in animals (like love) is IMO kinda silly since I'm not sure we can precisely define or quantify just what it is we are supposed to be experiencing that animals definitely aren't.
Not trying to be hostile; just registering my two cents.