20-year-old Anna Crotti, who met the boyband during their ongoing visit to Australia, says she felt the need to cancel her date with Malik after other girls abused her via Facebook.
She is quoted by MTV as saying: "A security guard came up to me. I thought I was in trouble but he said, 'The lads want your number'. I got a text later saying hello. I asked who it was and it was Zayn.
"By the end of the day, it got a bit too scary. Random girls were abusing me on Facebook. Girls were calling the radio station and giving me s**t.
"Mothers even called me in tears, demanding to know if I knew where One Direction were because their daughters wanted to meet them.
"I didn't even want to walk home. It was so intense. I messaged Zayn and said, 'Maybe it's not a good idea we meet up'. It was just a bit too full on."
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Photo gallery - One Direction playing a sold-out show in Sydney last night: