This is a goid example of people spending way too much time on Facebook and taking it way too seriously.
Even if you do have a case of defamation, this is not one you want to pursue. Think about what a defamation lawsuit would mean here. Do you actually want to sue your ex and the current gf and drag your gyn in and all the people on the social network who they're spreading this to into being witnesses to a lawsuit, assuming anyone even believes this lie about your std? Does your ex and his current gf even have money to satisfy a judgment if you got one? Have you got a lot of money and time to pay a lawyer and be involved in a lawsuit? Do you really want to repeat over and over in public litgation documents the very fact you wish had never been written?
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