Yes, it is possible for narcissists to engage in multiple relationships simultaneously, often referred to as "cheating" or "having affairs." Narcissists are known for their manipulative and deceitful behavior, and they can be quite skilled at maintaining separate relationships without the knowledge of each partner.
In such situations, the narcissist may present themselves as fully committed to each partner, creating a facade of loyalty and exclusivity while secretly leading a double life. They might use lies, manipulation, and charm to keep each partner unaware of the other's existence.
These relationships can be emotionally devastating for the partners who are being deceived, as they are investing their time, emotions, and trust in someone who is not being truthful about their intentions and commitments.
It's important to understand that this behavior is not exclusive to narcissists, but they may be more inclined to engage in such deceitful conduct due to their self-centered and exploitative nature. Additionally, engaging in multiple relationships is a clear violation of trust and boundaries, which can cause severe emotional and psychological harm to the individuals involved. If you suspect you or someone you know is in such a situation, seeking support and guidance from a therapist or counselor is recommended.