Amy WinehouseAmy Winehouse is said to have hooked up with a third man while husband Blake Fielder-Civil has been in prison.

After last week’s revelations that Amy has been seeing her manager’s assistant Alex Haines for around four weeks and that she had a fling with friend Blake Wood, Babyshambles guitarist Mik Whitnall has reportedly claimed he’s slept with the singer on a number of occasions.

A source close to Mik told the Sun: “He says they’ve slept together a couple of times. He told a few people after that stuff about her and Alex Haines came out.”

“It’s always supposed to have happened when they’ve been on a bender.”

The source added that Mik’s being telling friends about a birthmark that Amy has in an intimate location: “Telling people about her birthmark is his way of proving it happened. It’s male bravado.”

Earlier this week, Amy denied rumours she’s told her husband of a year that she wants a divorce but sources close to Amy claim she’s been living like “a single woman” in the five and a half months since Blake was arrested and placed on remand at HMP Pentonville in London. He is due to stand trial for assault and perversion of the course of justice charges next month.