Those who are passive aggressive can be extremely frustrating, as what their at times premeditated tactics will do, is attempt to manipulate you behind your back. Once you confront them, they will plead innocence, all while pretending to be nice.
Relationships become entangled, frayed, as the end result is usually a loss of trust or communication.
It’s a preplanned act of deliberation, a masked form of suppressed feelings, rather than expressing what they truly feel or think. This occurs when they want something, or when they’re angry or upset.