Actress Cameron Diaz and egocentric Alex Rodriguez have been secretly hooking up since their flirty meeting at the Creative Artists Agency Super Bowl party in Miami back in February (read more details here). According to Life & Style, Cam and A-Rod are dating but trying to keep it quiet for the now.

“They were all over each other at the CAA party,” says an onlooker. “Cameron had her hands all over Alex’s back, and they were dancing together. They also left the party together that night.”

A-Rod, who was romantic linked to Madonna and recently dumped Kate Hudson, is allegedly very discreet about his affairs. Cameron also doesn’t need the unwanted media attention. So she has been flying to Miami to meet Alex in total secrecy, despite rumors Cam and Justin Timberlake might have rekindled their romance.