The 16-year-old, who plays Jay Mitchell in the BBC soap, told Inside Soap that he has taken to looking after his co-star.
"Perry Fenwick, he's my number one," Borthwick said. "But I'm like his lapdog. I always ask him if he wants a coffee or if I can get him things. But I don't mind with Pel, because he's just my man."
Despite admitting that he is enjoying his character's relationship with Abi Branning, Borthwick joked that he would like to see him date Roxy Mitchell, played by Rita Simons.
"I think Abi and Jay are a good couple," he said. "Jay's a right one - he's already had a crack at Abi's sister Lauren and now he's going for the younger one. He's got an eye for the Branning women.
"I reckon Roxy [would] be a good match for him too - he'd be happy to learn a few things from her, I'm sure!"
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