How do you sue for slander?
An acquaintance of my husband has been telling people that I am having an affair with him and I am on drugs. These rumors cost me my marriage. Of course, my husband believes what he is hearing because he doesn't think that someone would lie about something like this if it wasn't true. I want to prove to everyone these are vicious lies. I want to take a drug test and make these rumors stop.
Slander is a verbal form of defamation. The written form is called libel. Every state has different laws on what constitutes defamation and by the type of defamation, whether or not you need to show damage to your reputation.
The type of rumors you are speaking about what most likely constitute slander per se, which means you don't even have to prove damage to your reputation. You sue him for such slander and his defense would have to be the truth. If he shows what you are talking about is true, he wins the slander suit.
So, if do not take drugs and have not had an affair, sue. You need an attorney who specializes in defamation (which can be construed as a form of personal injury). Further, your lawyer may have other theories upon which to sue this person.
You should first figure out how this person has come to this conclusion and from where tihs is stemming.