Apparently, since the news broke that Kristen had cheated on Robert with married director Rupert Sanders, Lizzy and Victoria are standing by their brother – and don’t want him to take Kristen back.
“Robert’s sisters were fuming with Kristen for hurting their brother in the way she did,” a source revealed.
“Lizzy and Victoria feel terrible for heartbroken Robert, especially because of the embarrassment that was caused by the manner in which the affair was exposed.
“They’ve told him that there’s no way he can take Kristen back after what she did to him.
“It’s a case of once she’s cheated, what’s to stop her doing it again and Lizzy and Victoria are pretty unforgiving over Kristen’s actions.
“Instead, they believe Robert should embrace singledom, throw himself into work and not consider settling down with anyone until he’s ready.
“They will kill him if he gets back with Kristen.”