"I only realised that it had happened when I got a long letter from the girl thanking me for chatting with her. When she mentioned that I had asked whether she had a boyfriend alarm bells went off in my head."
Myleene added: "I had to make sure that she was OK and phoned the NSPCC and the police. That night the girl's mum rang to thank me."
Laws to protect YOU
The pop star said all children should report anything suspicious in chatrooms to the NSPCC.
Myleene is backing the government's Internet Safety Campaign to keep children safe.
The government's changing the law to protect children even more. Adults caught making friends with children on the internet with the intention of hurting them will be sent to prison for five years.
For more on child safety, click on the NSPCC link on the right of this page.
Hear Story
E-mail: Do you feel safe on the internet?
