So initiated a relationship with a girl a year back. Things got progressively worse, admittedly I was failing her rapid shit tests rather badly and we eventually we broke up. We mutually cut communications.

A person I used to be friendly with is still talking to her and currently he's posting on social networking sites, deliberately taking my words out of context, reworking their meaning to make them offensive and tagging me in public posts what seems to be an attempt to smear my name.

I can't tell if she's behind it or if he's behind it, but I'm getting annoyed because I have no clue how to deal with this. I don't know half the people commenting on his posts, but they're members of a community I frequent (and that he does too, but she doesn't).