Showbiz
Rex Features
The Entourage star and Greene met on Friday at a welcome dinner for the Oakley-sponsored 'Learn To Ride' surf weekend in Santa Barbara, California, People reports.
"[They] got super cosy all weekend. They were very cute," a source said. "They were hanging out nonstop and they only met Friday. They spent the whole time together - surfed together - everything."
On Saturday, the pair met up again for a barbeque at the El Capitan Ranch and were reportedly "flirting and dancing close all night long".
The insider added: "They held nothing back dancing - it was pretty intense."
Grenier ended his relationship with actress Isabel Lucas last year, while Greene was romantically linked to her Twilight Saga: New Moon co-star Jackson Rathbone.
Related Stories
Ten Things About...
Ten Things About... Ridley ScottWe find out ten fast facts about the English producer and director.
Interviews
'Angels' Share' Ken Loach interviewKen Loach, Paul Laverty and Paul Brannigan on their whiskey-soaked comedy.
Fashion & Beauty
Duchess of Cambridge's memorable momentsFlick through a gallery of Kate Middleton's stand-out public appearances.
Celeb Birthdays
Marilyn Monroe: Life and career in picsFlick through our gallery on what would have been Marilyn's 86th birthday.
