The 32-year-old "Fight for This Love" hitmaker said Cowell knows how to push her right buttons, reported The Daily Star.
"Me and Simon are still rowing. He knows which buttons to press. Sometimes I want to move away from him but he won't let us change seats. He just really wants to wind me up to get a response.
"I don't think I'll throw glasses of water on him, I think those days are done. Maybe I'll use a high heel. That can double up as a weapon, can't it?"
"I've got to work on not retaliating. But it has been a little bit of a different circumstance this last few weeks, unfortunately, so it's been more banter than bickering.
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"Can I be honest with you? I love him dearly. I do. Viewers don't want to watch me and Simon fighting. They want to laugh along with us," she said.
Cowell, however, said he cannot stop joking about the singer.
"The thing about Cheryl is that she's so easy to wind up that I can't stop myself, because it makes me laugh," he explained.