A-Rod, Kate Hudson: Neckin'

Was this in the Selena Roberts book? Regardless, according to Page Six's much more reliable anonymous sources, A-Rod and the former Mrs. Chris Robinson are officially doing it.

The gossip rapscallions hinted at a possible relationship way back in January, but apparently the latest meet-up was a little more handsy than their previous encounter. Hudson was spotted in the teak seats at Yankee Stadium Friday night to watch the Twins game ( photos) and then afterward she and Captain Boli high-tailed it to the Mustang Grill so they could go all seven-minutes-in-heaven in private:

But the real action came later that night at Mustang Grill on Second Avenue. Our source said a bartender at the Southwestern joint at 85th Street "was asking patrons not to go in the back room around 1 a.m. because A-Rod and Kate Hudson were back there making out."

One staffer at the restaurant confirmed to Page Six the two were there celebrating the Yanks' win against the Minnesota Twins.

"Yes, they were here together," the server told us, although she did not witness any lip-lock herself.

Another source said the two were spotted over the weekend outside the glamorous 15 Central Park W

But what about this woman? Or this one? And has Kate Hudson started some protein-infused workout routine that would give her the vascular arms and Dwight Howard shoulders that A-Rod supposedly covets in his ladies?

Alex Rodriguez, Kate Hudson Make Out At Restaurant [Murdoch, Inc.]