Ask a Canada Law Question, Get an Answer ASAP!
I am sorry this happened to you.
Yes, if this person told lies about you then you can sue for damage to your reputation.
As a first step you should consult with a lawyer face to face with a view to retaining the lawyer to send this person a letter demanding a written retraction and a formal apology and threatening a lawsuit.
If that does not work the next step would be to sue.