This report comes via Hollywood Life. The same place that believed the Miley Cyrus pregnant with Juicy J’s baby story was true. There’s not a bigger grain of salt you could take for a story.
They said this happened back in July close to the time when Zac was still into cocaine. So I wouldn’t be surprised this was true. They don’t seem to run in the same circles but I assume Hollywood is just like high school and everybody just has sex with each other while doing lots of drugs.