I have no empirical evidence to weigh in here, but my chams certainly don’t love me; in fact, I’m pretty sure they hate my guts.
Seriously though, there’s some real room for interesting philosophical debate here. For instance, the concept of ‘love’ is often taken to involve activity: love, it is often said, isn’t merely an emotion, it’s the activity of putting someone else’s needs before your own for the sole benefit of that person’s happiness. This is merely one view of the concept, but some clarity here might go a long way. For instance, if we’re simply talking about the result of brain processes (hormones, etc.) of the sort only seen in, eg, primates, then anything lacking the relevant hardware will, ipso facto, be incapable of love. My point is that terms such as ‘emotional bond, love, caring, trust, etc’ require a lot more conceptual unpacking before any interested parties can argue about them. Come up with a tentative set of criteria for ‘love’, agreed upon by all parties, then evaluate individuals according to those criteria. My guess is that the antagonists in this discussion are talking past one another.