The Gods are also not to be used for comparison with human relationship. The Gods feel more, think more, and more aware etc, deeper, higher, broader. You cannot compare a God/Goddess loving someone to a shallow 21st century NPC who can't tell the difference between an acquaintance and a friend, a crush and love itself, etc
The Gods' private lives are also their private lives. It's not our place to be nosy and be gossiping around.
The reality is that polyamory is not for the majority of humans. There are hangups, negative karmic seeds and other psychological problems that affect the majority of those claiming to be polyamorous.
When you met someone who claims polyamorous, statistically you can make the assumption that they are self-deluded and you'd be right in the overwhelming majority of cases.
Now, whether it's your job to fix that in a potential lover or not, that's something for you to decide. And, often, no matter how hard you try to fix something, you just can't if the person is not ready and open.