danceparty3000 wrote

Cheating on your partner is an ethical issue. If a polyamorous person wants to be in a relationship with a monogamous person, they either let it go or choose not to sleep with other people, don't they? When a monogamous relationship matures, like any other mature relationship, it loses the initial excitement of infatuation, but that doesn't change the boundaries of cheating. You might not flirt with each other anymore for precisely this reason, but that doesn't mean your partner has to let you flirt with other people. Like I said, it's not magical. There is nothing inherently healthy or unhealthy about it.