Yes, I believe it because I saw it first hand. Ginger did go crying to Peggy. She couldn't believe Petey dumped her ass after she lied and perjured herself to the court to get Petey a lessor sentencing for his fraud and money laundering crimes.
Petey used and abused GK just like everyone else he comes in contact with. It makes no difference, Petey is a narcissists and only cares about himself. He will screw you over in a second if he thinks he can steal your money.