Socialite Paris Hilton has laughed off reports she is dating ENTOURAGE heart-throb Adrian Grenier, insisting they are just pals. The hotel heiress has been romantically linked to a string of famous men this year (07), including James Blunt, Josh Henderson, Cisco Adler and NASCAR driver Kasey Kahne. After Hilton and Grenier were spotted frolicking on a beach in Malibu, California, last week (ends10Aug07), gossips began speculating they were dating. However, Hilton's rep says, "They are just friends. There's nothing between them."