Definitely make it clear that you are not with someone, and if that person really cares that much then I'd say they like you.
Ignore it.
Laws cannot protect someone from being falsely accused. After an accusation has been made, you may be able to sue someone for defamation of character.
Being blamed for something you didn't do is called being falsely accused or wrongly accused.
Being falsely accused of spying
Dr- Phil - 2002 Falsely Accused of Being a Deadbeat Mom was released on: USA: 7 March 2013
She was falsely accused of being a spendthrift.
You can clear your name after being falsely accused of something you didn't do by submitting proof of who actually did the deed. Another option is to have an ironclad alibi proving that you couldn't have done the deed.
Because he was being falsely accused of contradicting the Torah
Arthur
Abigail falsely accused people of witchcraft. She and her friends all pretended to be bewitched and then falsely identified people they didn't like or people who weren't trusted in the community and being responsible for her bewitchment.
False reporting of spousal abuse is a crime because it taint's the character of the person being falsely accused. It is immoral, can cause damage in the accused person's life and the accused person should take legal action.
I assume you're references Munchhausen syndrome, in that the person craves the attention they get from being considered a victim of domestic violence?