How do you decide?

As previously noted here, monogamy is a beautiful relationship structure; so is polyamory. Each is about doing proper justice to relationships with however many partners for whom you have the time and resources. For many people, that’s one. For others, it may be more. But I think two points are key: Being open to where love leads, and not making commitments you can’t sustain in the long term.

I have come to love the first clause and chafe at the second.