The term was originally used to discuss a person in a relationship acting in bad faith. It implies someone was deceptive and lying to maintain status while actively manipulating a person in a relationship for the sole purpose of access to your money, status or belongings and often for a premeditated divorce (for the specific intention of taking half someones money house ect)

And is generally considered bad, cause of the whole deception thing.

So yeah fuck that and fuck forgetting that specific behavior is toxic because relationships come in different shapes and sizes, toxic-positivity, bullshit 💩💩