Things are heating up FAST for Aaron Rodgers and Danica Patrick -- the couple just shot down to Mexico for a romantic beach vacation ... just days after the Daytona 500.
The two were spotted cozying up together at a fancy resort in a Mexican beach town -- cuddling, kissing ... you know, doing all the things couples do on beach vacations.
Aaron and Danica have only been dating for about 2 months -- but things seem pretty serious. They've been spotted around Arizona together and he flew out to Florida this past weekend to watch Danica's final NASCAR race.