Ryan Gosling and Eva Mendes steaming up the editing suite

Eva Mendes. Photo / Anne Joyce

Ryan Gosling and Eva Mendes can't keep their hands off each other.

The couple have reportedly been getting frisky in the editing suite of the actor's directorial debut How To Catch A Monster in which his actress girlfriend stars, much to the shock of other crew members.

A source told America's Star magazine: "They aren't exactly discreet. Ryan will be totally focused, then she'll throw him off by giving him a saucy look. The next thing you know, they've kicked everyone out of of the room so they can 'talk'."

It was recently claimed that the couple - who have been dating for over a year - are "very much in love" but in no hurry to move in together.

A source said: "They don't shout from the rooftops but they cherish what they have. There's no rush to move in together. What's his is hers already and likewise."

Eva, 39, has also told friends her close relationship with 32-year-old Ryan's mother Donna is the key to their lasting love.

The insider added: "Eva says that's what sealed the deal with Ryan. They're going to make it."

The brunette beauty recently admitted to hating filming sex scenes for her films, but felt more comfortable with Ryan when they worked on The Place Beyond The Pines as he made her feel better.

She said: "Love scenes are awful. Let's just say that. They're always awkward.

"[Ryan and I] knew each other for years before filming. You can be friends with someone and not like how they work but I respect him so much. He certainly upped my game."

- BANG! Showbiz