[header] How to defend yourself in a false allegation lawsuit [title] Evaluate the allegations. [step] When you get notice-whether through a demand letter or a lawsuit-that someone is suing you for making false allegations, look at what they're saying you said or did and consider the context of your statements or actions. [substeps] At this point, assume they have proof for anything they claim. 
Look at your own records and see how their story matches with yours. For example, suppose you made a post on social media about a neighbor having a romantic dinner with someone who wasn't their spouse.