I've talked to several people who have told me that they knew someone who tried putting spells or hexes on other people. Some of these spells are sickening or disgusting, because apparently, some people in the world are beyond desperate.
Someone once told me that she knew a woman who mixed her menstrual blood in a guy's beer because she was told that this would make him not be able to leave her or choose the other woman he was seeing over her. The woman thought the spell had worked because of the fact that the guy came to her house one night after she had done that nasty act to his beer and acted as if he urgently needed to see her.
But shortly after that, the guy never saw her again and had indeed chosen the other woman over her. So, none of what she had done was worth it, and it's a shame that she thought doing something so degrading would bring her the love of someone who obviously didn't love or want her.