EXCLUSIVE VIDEO INTERVIEWS: Twilight Stars Bite Into Robert Pattinson & Kristen Stewart Dating Rumors

The stars of Twilight revealed exclusively to RadarOnline.com Tuesday that they were surprised to find out that fan favorites Robert Pattinson and Kristen Stewart are apparently “co-stars”  in each other's lives.

Michael Welch, Christian Serratos and Justin Chon, who play the human high school friends of Kristen Stewart in the blockbuster vampire movie, left for Vancouver, British Columbia Tuesday morning from LAX Airport and they stopped for our RandarOnline.com cameras.

Michael says "I didn't even know about it. I thought that all the magazine fodder was just lies. "

While we were chatting with Michael, sexy “18 going on 19-year-old”  Christian Serratos literally bumped into him. At first, he thought it was just a rude  stranger  at the airport then realized it was his co-star!

Christian told us, "I had no idea anything was confirmed."  Justin Chon said the apparent relationship caught him off guard too, and with a sly smile said: "I'm sure they're having a great time."

This is the first time the stars will see Rob and Kristen since the Comic-Con convention in San Diego, California a month ago.