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Speaker's wife Sally Bercow, 45, had an affair with her husband's COUSIN, it was claimed this week.

Her marriage to John Bercow is now reported to be over but Alan Bercow's wife Erica is so far believed to be standing by her man.

The tawdry revelations are the latest in a long line of celebrity flings that were too close for comfort.

Natasha Giggs

(Image: Facebook)

Mum-of-two Natasha, 32, was marred to Rhodri Giggs, 37, when she embarked on a eight year affair with his BROTHER Ryan Giggs, the superstar footballer.

Their tawdry longterm fling saw the former estate agent set up liaisons in empty houses and flats.

Natasha and Rhodri divorced, while Ryan, 41, was forgiven by wife Stacey, the mum to his two kids.

Jude Law

The Hollywood actor cheated on his beautiful fiancee Sienna Miller, 33, with his children's NANNY.

Daisy Wright later spilled the beans on their secret liaisons and said she had felt "betrayed" by Jude.

The actor, 42, and Sienna split for good in 2011.

Arnold Schwarzenegger

The action hero has been married to actress Maria Shriver for 27 years.

The couple have four children, but in 2011 it was revealed Arnold, 68, had fathered a love child, Joseph, with their MAID Mildred Baenas.

Shockingly, Mildred and Maria were even pregnant at the same time.

Kieran Hayler

(Image: FameFlynet)

Cheating Kieran, 27, was married to Katie Price when she found out he had been sleeping with her BEST PAL Jane Poutney, 50.

Devastated Katie, 36, caught them kissing on holiday in Cape Verde - and later found out they had had a seven-month affair.

Mother-of-five Katie stuck by stripper Kieran, who went onto seek treatment for sex addiction.