Jealous partners are one of the most common tropes when we discuss toxic relationships and bad partners. There are the jealous types who are controlling and don't want their lovers to have any friendships or relationships other than the romantic partnership they're already in. There are the types who behave like conspiracy theorists, convinced that when you don't text back you MUST be in someone else's DMs. There are also the ones who stalk, combing over their partner's internet presence lookin…