Pattinson, 26, cancelled an upcoming press appearance for his latest flick, "Cosmopolis," according to Entertainment Tonight.
While the source told People that Pattinson has had his "heart ripped out" by the scandal, a Stewart confidante told the magazine the actress is also crushed by the effects of her affair.
Kristen Stewart cheated on Robert Pattinson with Rupert Sanders, the director of her recent movie Snow White and the Huntsman. The 41-year-old British director is married to Liberty Ross, 33, and they have 2 children together, daughter Skyla, 7, and son Tennyson, 5.
Us Weekly released photos of the Snow White and the Huntsman director in a steamy makeout session with his star actress Stewart, 22, on July 17.
The shamed father has apologized for his infidelities to wife Liberty Ross saying "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."
Stewart issued her own apology on July 25 directed at her Twilight costar and boyfriend Robert Pattinson, 26, saying she is "deeply sorry for the hurt and embarrassment I've caused to those close to me and everyone this has affected. This momentary indiscretion has jeopardized the most important thing in my life, the person I love and respect the most, Rob. I love him, I love him, I'm so sorry."
