WATCH: Robert Pattinson and Kristen Stewart's steamy kiss

Robert Pattinson and Kristen Stewart leant in for a sneaky kiss at Cannes when they thought no one was looking…

Although it's been public knowledge that Twilight twosome Robert Pattinson and Kristen Stewart have been dating for quite some time, we've yet to see much evidence of the fact. But yesterday at Cannes Rob and Kristen FINALLY came clean with their romance, after being snapped enjoying a steamy kiss at a party.

And we have the video to prove it.

Scream!

SEE ROB AND KRISTEN WALK THE CANNES RED CARPET HERE!

The pictures that send Twi-hards into an instant frenzy, Robert Pattinson, who had carefully kept his distance from Kristen on the red carpet, was spied leaning in for a kiss.

After attending the official premiere for Kristen's movie On the Road, the usually private pair hit a glittering after-party, where they decided to let their hair down.

After mingling with the cast and movie execs, Rob and Kristen found a quiet corner to sneak some time to themselves.

And just when they thought no one was watching, Rob leaned in for the steamy smooch and wrapped his arms around Kristen, before the couple flirted and giggled.

WATCH Rob and Kristen's steamy kiss here…

Phew.

Are you pleased Robert Pattinson and Kristen Stewart have finally gone public with their romance? Let us know in the comments box below…

READ: ROB AND KRISTEN COSY UP IN CANNES

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