Kristen Stewart dreads 'awkward' Robert Pattinson reunion at Cannes Film Festival? Robsten feelings still strong despite break-up/cheating RUMORS

Rumors suggest that Robsten might rent a "private" villa together at this month's upcoming Cannes Film Festival. But just how awkward might this "Twilight" reunion be?

UPDATE: Robert Pattinson & Imogen Ker dating rumors DENIED, Kristen Stewart relieved? 'Twilight' Playboy not ready for serious girlfriend yet?

According to K-Stew, VERY awkward.

An alleged insider tells NOW magazine, "Awkward is an understatement. Kristen hates confrontation, so seeing Rob will be strange for both of them."

Despite ongoing "getting back together" rumors, the "SWATH" starlet hasn't seen her ex-boyfriend in months - he didn't even stop by LA to celebrate her 24th birthday back in April. In the meantime...

Stewart apparently became a lesbian and started dating BFF Alicia Cargile. Such viral girlfriend buzz has since been debunked.

Supposedly R-Patz is a huge Hollywood playoby - since breaking things off with K-Stew he's been romantically linked to a slew of young women including Imogen Ker, Katy Perry, Cleo Wade, Dylan Penn, and Stewart's fellow Met Gala party gal, Riley Keough. There's no proof that the British heartthrob actually dated any of these beauties.

With that being said, some fans still think a Robsten reunion is undeniable:

"They have a lot of history together. Feelings don't disappear over night," the insider explains.

Do readers think sparks will ultimately fly at Cannes?