TV presenter Melanie, who married 27-year-old Jack six months ago, was said to have been arrested following an incident last night (26 November).
Witnesses saw 43-year-old Melanie being led from the couple's London flat in handcuffs following a row, according to the MailOnline.
Reveal has contacted Melanie's rep for a comment and are waiting for a response.
In a statement, a Metropolitan Police spokesman said: "A 43-year-old woman was arrested on suspicion of common assault and taken to a North London police station.
"She has since been given a caution for common assault. The victim, a man, did not require hospital treatment."
Melanie and Jack, a roofer, first got together after exchanging messages and saucy pictures with each other on Twitter.
Following a whirlwind romance, they got engaged in April 2012 and married in front of family and friends at Sherborne Castle in Dorset on 18 May this year.