Does this count as slander? Is it illegal?

[symington]

My friend recently had someone post screenshots of a fake conversation making her look bad on facebook. It was snapshots of her saying things making her look desperate and the boy who posted these things refused to delete the picture. I just wanted to know if there is anything I can do. Thanks.

[bardoul]

you could do the same to him, or complain to Facebook, which if they are convinced might delete it and expel him from using Facebook