Aaron Rodgers and Danica Patrick are a happy, loving couple these days ... and they can thank Jim Carrey -- so says the ex-NASCAR driver herself.
Danica was delivering a motivational speech in North Dakota on Wednesday ... and afterward, she fielded some questions about her relationship with the Packers star QB.
One of the questions ... what was Aaron Rodgers' first line that got you to (eventually) go on a date with him?
That's when D.P. said the future Hall of Famer went straight to the "Dumb & Dumber" quote, well, to catch her attention.