01/28/2013 05:12 pm ET Updated Jan 28, 2013

Rupert Sanders, Liberty Ross Divorce: Did Infidelity Cause Their Split?

Is infidelity behind Liberty Ross' divorce filing?

On Friday, the 34-year-old model/actress filed for divorce from director Rupert Sanders, 41. The filing came six months after Sanders was photographed kissing 22-year-old actress Kristen Stewart last summer (Click here for photos). Sanders and Stewart worked together on "Snow White and the Huntsman."

Shortly after the incident, Sanders told People magazine in a statement: "I am utterly distraught about the pain I have caused my family. My beautiful wife and heavenly children are all I have in this world. I love them with all my heart. I am praying that we can get through this together."

According to Radar Online, Sanders and Stewart "engaged in several make-out sessions," but never had sex.

In September, Ross and Sanders -- who are parents to two young children -- reportedly attended couples counseling to try to save their marriage.

If infidelity really is to blame for the split, Ross would hardly be the first star to end her marriage after a cheating scandal. Click through the slideshow below for five others.

Celebrity Cheating Scandals That Ended In Divorce