Emilie de Ravin and Robert Pattinson Emilie de Ravin and Robert Pattinson Busted: Robert Pattinson canoodling with a new lady.

In fact, this clinch is so steamy we're inclined to nickname him 'Passionate Pattinson' from now on.

Apart from being totally gutted it's not us he's rolling around in the sand with, we've set Showbiz Sherlock on his trail to find out just who on earth this mystery lady is.

Because seriously, she could've checked with us before getting her claws into Rob and ambushing him like this.

Not that he seems to be fighting it, mind you.

So, to avoid any other situations like this, we'd like to lay down the rules as to when Rob may be kissed. They are:

A.) If he's at work and the artistic quality of the scene depends on it, we'll OK a smooch.

B.) If he's smooching us (of course).

Basically, any other occasion where his lips may be required is a firm no.

But now, back to reality and to unmasking who the lucky lady pashing it up with him is.

Find out in our gallery below...