For those paying attention to the high-profile blondes Alex Rodriguez somehow seems to keep racking up, here's a new one for the list: Cameron Diaz. The two have been secretly dating since dancing and getting flirty at a CAA Super Bowl party. “A-Rod's with Cameron. They've been keeping it quiet, but they're totally together,” a source tells Life & Style. But don’t get too excited about any potential blue-eyed bundles of joy: A New York Post source calls the relationship casual.