It is illegal to steal someone's spouse and ruin their marriage.

The Law

Under an old civil action known as 'alienation of affection,' a spurned spouse could sue the person who seduced their husband or wife away. It treated a marriage contract like property, allowing the victim to claim financial damages for the loss of their spouse's affection. While Georgia mostly abolished this tort in the late 20th century, remnants of these 'heartbalm' laws linger in legal history.