BERLIN (Reuters) - A German couple have been given a quick divorce on the grounds of "gross infidelity" after the wife moved in with her new lover just four days after her wedding, a court said on Thursday.

"Normally couples must be separated for a year before a divorce can be granted," said presiding judge Christian Kropp in the town of Sondershausen, eastern Germany. "But given the extreme circumstances, we made an exception here."

The 19-year-old woman married the 25-year-old army sergeant on Dec. 21. On Christmas Day she left him to live with a man she had met five days before getting married.