The reason Chris Brown just couldn't shake off Karrueche Tran from his system is because she always knows how to push his buttons, alleged a new report. Meanwhile, the model took to her social media after being accused of being after his money.

Hollywood Life reported that Karrueche "is so good at pleasing Chris - he's often left 'short of breath and exhaling every few seconds.'"

The website also said that they keep their fire alive by engaging in a "whole lot of phone sex" when they are not together.

"That's just to spice stuff up when they can't be in the same bed with each other. But they've mastered this art since Karrueche was gone filming for a month," the tabloid alleged. "Her voice makes Chris' ears tingle and she said when they'd talk over the phone he'd be short of breath and exhaling every few seconds."

The source added, "She's so good at phone sex and told one of her friends that she's been able to make Chris, you know, without even touching him. She's that good and she's considering writing a small book about the art of phone sex."

Meanwhile, Cosmopolitan noted an Instagram exchange between Karrueche Tran's follower and Chris Brown's girlfriend.

The exchange started with the follower accusing Chris Brown's girlfriend of being a gold digger: "Lemme ask you something Why the hell are you famous? What do you do that benefits society or that is entertaining? All I know is that you love to ride Chris Brown's d--- for stacks."

To which Karruche Tran replied: "You clearly don't know my life. I work and I work for mines ... I'm famous cause n----- like you keep my f------ name in their mouths. You know what I do that benefits society? I f------ give back to the community. I've put food in their mouths and smiles on their faces...WTF do you do besides sit up here and try and downplay women? You are a low life and sad excuse for a male."