Photo courtesy of Splash News

Running into an ex is never fun, but when you're a celebrity, it's almost inevitable. 

Kristen Stewart reportedly went to extra lengths to bypass her ex and former "Twilight" co-star Robert Pattinson while in Cannes, France on May 20. 

The 24-year-old actress, who is in town to promote her new movie, "Sils Maria," on May 24, decided to fly in a few days later than originally intended so that she could avoid an awkward run-in with her ex.

According to Hollywood Life, Kristen was originally planning to fly in a few days in advance to attend the Chanel dinner in Cannes. After all, she is the face of the famed French fashion house. 

Instead, she allegedly waited until Rob left Cannes before she arrived. 

“Kristen avoided coming to Cannes until Rob had left,” a source tells the site. “She does not want to party with Rob right now, he’s really hurt her. She can’t stand seeing him dating all these other girls, it’s too much to take, she loves him and unless he tells her that he wants to get back together she doesn’t want to see him, it’s too painful right now.”

Another reason Kristen reportedly chose to arrive in France at a later date was because she didn't want to cause a huge scene.

“Kristen was never scheduled to be in Cannes at the same time as Rob,” the source continues. “That is the last thing either of them want right now, they both hate fandemonium and that’s what it would be.”

What lengths have you gone to in order to avoid an ex? Tell us!