Incredibly, the victim tried covering for her by claiming he had chopped it off himself in India.
His horrified parents raced him to hospital when they found him writhing in agony in his bedroom after he managed to stumble back.
But he kept his mother in the dark about what happened at his girlfriend’s home nearby in Naugawan Darshan Singh, India.
A police officer said: ‘He told doctors he cut his privates on his own.’
The unnamed couple had been going out together for around four years.
She has been arrested and faces an attempted murder.
The sharp curved sickle, used for cutting crops, has been recovered – along with the severed p*nis.
Local sources say doctors are unlikely to be able to reattach it.
The man, who had returned home just 10 days earlier after working in Mumbai, is recovering in Sanjay Gandhi Hospital in Rewa.