Non-monogamy is the practice of engaging in multiple sexual or romantic relationships simultaneously. Nonmonogamy can be practiced in ways that are generally considered to be ethical or non-ethical by those in non-monogamous communities. Generally speaking, those in ethical non-monogamous relationships strive to focus on open communication, negotiation of rules, and treat each person involved with the same dignity and respect regardless of their role within a non-monogamous couple or group. Ethical non-monogamy can take the form of polyamory, swinging, open marriages, and other similarly structured relationships.