Ryan Phillippe spotted partying, keeping things hot with sexy younger girlfriend

Ryan Phillippe and Paulina Slagter spotted in at Miami's Hyde Beach at SLS South Beach. (SETH BROWARNIK/WorldRedEye.com)

Ryan Phillippe may be 39, but he is still partying like he’s in his twenties thanks to his sexy younger girlfriend, Paulina Slagter, 23.

The pair, who have reportedly been linked since December 2011, were spotted getting cozy in a Miami club on Friday, drinking Don Julio on the rocks and keeping their relationship hot.

“They were seen whispering into each other ears” and seemed “really into each other” at Hyde Beach at SLS South Beach, a spy told FOX411.

“Ryan was really attentive and always making sure Paulina felt comfortable, never leaving her side,” our source dished.

According to Us Weekly, Phillippe and his younger hottie were spotted out clubbing in Miami last week as well, drinking Patron and dancing.

"They were inseparable and kissing throughout the night," an onlooker told Us Weekly.

The pair has also recently been snapped hanging on Miami’s beaches in skimpy swimwear.

Unlike his famous ex-wife Reese Witherspoon, Slagter has previously led a life outside of the spotlight. She is a law school student, according to Us Weekly.