My ex boyfriend dumped me for other girl it’s been quite a few months but I can’t stop thinking about it I want to take a revenge what should I do?

I feel terrible thinking about this again and again I cannot focus on my studies there’s no contact between me and him and I don’t even want to bcoz he is the one who dumped me for other girl but I feel very uneasy thinking about what happened what should I do I want to make him regret what he did

My ex boyfriend dumped me for other girl it’s been quite a few months but I can’t stop thinking about it I want to take a revenge what should I do?
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