Is Robert Pattinson rekindling things with a lucky ex-girlfriend?

The Twilight hunk was spotted kissing a mystery girl in Toronto this week, and sources now reveal the identity of the lucky gal, according to Hollywood Life.

“That girl is Caitlin Cronenberg,” the source says.

Credit: Twitter

So who is Caitlin Cronenberg? Well, for starters, she's a photographer and the daughter of famed film director David Cronenberg, who directed Rob in the 2012 film Cosmopolis.

Rob and 28-year-old Caitlin were rumored to have hooked up about two years ago, but they never got too serious, as Rob and Caitlin were both on and off with other people at the time.

So are they now ready to heat things up? It certainly seems that Rob and Riley Keough aren't moving things forward, so now might be Caitlin's chance. Get it, girl!

Still, we're guessing that this latest news isn't going to fly with Kristen Stewart. (Get it — "fly"? Because David Cronenberg directed The Fly?)

Source: Hollywood Life