Zach Galifianakis is engaged to long time girlfriend, Quinn Lundberg. The couple plans to marry on August 11, 2012. While the representative for Zach Galifianakis, 42-years old, declined to comment on the engagement, it’s being reported from a source that invites have already been sent out. The source tells Celebuzz that, “The wedding invite is very Zach. While it has the formal and standard...