Other research demonstrateswhynarcissists and psychopaths engage in this punch in of behavior.
Why Do Narcissists and Psychopaths Provoke Jealousy on Purpose?
Why would a narcissist or psychopath provoke jealousy on purpose?

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According to research, it can depend on the subtype of their particular brand of pathology.
ResearchersTortoriello and colleagues(2017) investigated whether people with grandiose and vulnerable traits engaged in strategic jealousy induction.
Those with psychopathic traits also engage in jealousy induction.

What Does Jealousy Induction Look Like?
Jealousy induction can take many forms.
How Do You Heal from Jealousy Induction?
Healing from repeated patterns of jealousy induction is not easy.
If your partner had more grandiose narcissistic traits, they may have wanted power over you.
They may have wanted to alleviate feelings of inadequacy and test your love for them.
Therapies likeDialectical Behavior Therapycan teach you powerful mindfulness and emotional regulation tools for when you are triggered.
Reconnecting with your uniquenessis also important.