Abhinav Singh, 33, an engineer, pleaded guilty to stalking his boss's daughter between July 14 and August 28 in Gladstone and elsewhere in Queensland.
The Indian-born professional, who has a Canadian passport, will be deported, leaving behind his wife who is a doctor in Rockhampton city in Queensland, and their two children.
Police Prosecutor Nina Sulzer told Gladstone Magistrates Court that the woman was Singh's colleague who never expressed any romantic interest in him, instead telling police Singh was in "fantasyland", gladstoneobserver.Com.Au reported.
The engineer swamped her with hundreds of texts, phone calls and voice messages, ignoring warnings from police and her father who told Singh he was frightening his daughter.
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"I am guilty, I plead guilty," Singh said when he went before magistrate Mark Morrow via a telephone hook-up from a Queensland Detention Centre where he was being held after his arrest by the Department of Immigration and Border Protection.
"His stupidity of behaviour will cause long-lasting consequences to his wife and children. He was here on a temporary resident's visa," Defence lawyer Jun Pepito said.
The court fined Singh 2,000 dollars and ordered not to contact or go near the woman for two years.
Singh's wife has contacted Immigration and he was now waiting to be deported.