Courtney 'CJ' Webb alleged that she slept with the One Direction star at his £2.2m mansion in London last week while Perrie was on tour with Little Mix.
Perrie's friends are now encouraging her to split with the 'Little Things' singer, and find a boyfriend who wouldn't cheat on her.
A friend of Perrie told The Daily Mirror, "She's shocked by what this woman said and doesn't know what to think. Her head's all over the place.
"Her friends have been telling her that he's a rat who will never change his ways. They've been saying that she's gorgeous and successful, and should find a man who will treat her with the respect she deserves."
However, it looks unlikely that the pair will split up, as a source tells The Sun, "Perrie's still deeply in love with Zayn. She's very unlikely to end the relationship after this episode. The fact that they are physically together speaks volumes."
The source continues, "It looks like she's willing to give him a second chance. Her friends and bandmates know she's head-over-heels in love with him. But she'll certainly be keeping a closer eye on him after this incident."
Perrie Edwards and Zayn Malik in happier times...
After news of the alleged incident became public, Zayn flew back from France yesterday in order to talk to Perrie.
He was seen entering a hotel in Nottingham where Little Mix are currently staying, and the two left the hotel looking tense.
Below: The worst relationships in music of all time