Rob & Kristen: After the Split

Even though the romance between Twilight stars Robert Pattinson and Kristen Stewart has been put, at least temporarily, on ice, the former couple still have to see each other for work. However, that doesn't mean they're going to spend any more time together than is necessary.

It was time for the two to take their leave of Vancouver this morning and head back to L.A, but rather than share a ride from their deluxe digs at the Sheraton, Rob and Kristen each traveled to the airport in the back of their own chauffeured cars provided by the film. And after they arrived at the airport five minutes apart, the police had to do double duty as each star was given their own escort to the gate.

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"It's clear that neither Rob nor Kristen looked happy when they arrived at the airport," an eyewitness confirms to OK!.

In fact, says the witness, the only thing the couple seemed to share was their taste in wardrobe — dark shades and hoodie sweatshirts.

"This is not a pair that want to be seen together, that's for sure," the witness tells OK!.

Sources on the set say this is just a continuation of the behavior the two have demonstrated in recent days. Last night, the on-screen lovers wrapped shooting on the last Twilight film, Eclipse in the wee hours of the morning, having filmed their very last scene at the Canadian Motion Picture Park in Burnaby, British Columbia. And fans who waited at the studio gate say that Rob and Kristen are so chilly toward each other at the moment that they took separate limos back to their hotel after wrapping. In the past, they'd always made it a point to wait for each other, as they got out of their costumes, so that they could ride back to their hotel together.