A Chinese man leaked the address of his secret lover while talking during his sleep.

His wife Cao, of Nanjing, said she suspected her husband was up to something.

She revealed: "He became cold to me, and when his phone rang, he would walk out to answer it."

However, her husband revealed exactly what he was up to during his sleep.

"I tried to have a conversation with him, and he told me the name and address unconsciously," said the wife.

Cao said she brought up the matter with her husband the next day, but he denied it.

However, when she visited the address she was shocked to discover her husband there with his lover.