Polyamory, or consensual nonmonogamy, is the practice of having multiple intimate relationships, whether sexual or just romantic, with the full knowledge and consent of all parties involved. Polyamory is the practice of having or being open to multiple romantic relationships with the knowledge and consent of everyone involved. Unlike open relationships, polyamory is characterized by emotional as well as sexual or romantic intimacy among partners
Guide to Polyamory Sex - The Monogamy Experiment - Ethical Non-Monogamy | Polyamory | Open
In contrast to infidelity, adultery, and extramarital sex, polyamory is disclosed and agreed to by everyone involved.