LOL, justamom!!!!Only someone like you or me who had been through years of crappy roommates could come up with answers like that!
I vote for telling his friends about the poop. Heck, tell everyone you can! The girl sounds clueless anyway, the kind who's blinded by her feelings for the guy, so I'm not sure that you'll get any results from laying your cards on the table--but try.
And if that fails--criminal minds of Greekchat, what can she do?