The actor is filming his latest movie "Maps to the Stars" in Canada. The mystery woman reportedly joined Pattinson for a dinner, reported Aceshowbiz.
According to reports, the woman Pattinson was kissing might be Caitlin Cronenberg, the daughter of director David Cronenberg, who is helming "Maps to the Stars".
Previous rumors suggested Pattinson dated Elvis Presley's granddaughter, Riley Keough, who happens to be Stewart's co-star in "The Runaways". Pattinson and Stewart parted ways after the actress was caught cheating on him with married director Rupert Sanders.