A French journalist who posed online as an Islamic State recruit claims to have learnt intimate details of the group’s inner workings by courting a Syrian terrorist.

Freelance writer Anna Arelle (a pseudonym), revealed in The Guardian she went undercover to “understand how European children were falling for this propaganda”.

After creating a fake social media account, she was contacted by an alleged French terrorist named “Abu Bilel” in Syria, who noticed she had watched his propaganda video.

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In her first conversation with Bilel, she was told: “If you agree to marry me, I’ll treat you like a queen.”

“A lot of women fantasise about us; we’re Allah’s warriors,” he reportedly said.

The fake relationship continued for weeks, Ms Arelle purposely played along in order to glean more information.

In the lands controlled by the murderous terror group, young girls are married as young as 14; recruits practice to shoot weapons daily; and many have a penchant for designer clothes, shoes and jewellery despite their claim to traditional beliefs, she claimed to have learnt.

After a month, she agreed to meet Mr Bilel in Turkey, but reneged with he changed the location to war-torn Syria.

“I’m wanted internationally,” he said. ” That’s why I can’t even go to our cities in Turkey. I can only travel to Iraq.”

Her cancellation angered the terrorist, who reportedly called her a “little b***ch” and swore to make her “pay”.

Other terrorists were ordered to kill her on sight after her ruse was uncovered, with videos circulating online calling her a “devil”, she claimed.