Rachel McAdams, of True Detective and The Notebook, is not the same person as Elizabeth Banks, of Effie Trinket fame. So the awesome color commentator from Pitch Perfect did NOT in fact date Ryan Gosling.
I actually seem to do this alot with actors who look similar and play the same sort of parts. Damn.
ETA: HA HAHAHAHA Just saw this on the MP. EVERYBODY IS DOING IT.