Blake Fielder-Civil Compiling List of Amy Winehouse Indiscretions, Lovers to Use in Divorce Case

Things are starting to get nasty between Amy Winehouse and Blake Fielder-Civil, her jailbird husband who has sets about "compiling a dossier" of their tumultuous time together and his wife’s bad behavior - with the help of her former lovers.

Blake Fielder-Civil, who currently serving time in prison for assault and trial-fixing, wants to list all of the Back to Black singer's misdemeanors in court as he plans to divorce her, helped along the way by celeb lawyer Henri Brandman.

And top of his (presumably not very short) list is contacting those who Amy Winehouse is said to have had romances with during their stormy marriage.

"He wants to put together a case that [Amy Winehouse] is ultimately responsible for the breakdown in their marriage," a source tells The London Paper.

“Blake is totally serious about this. He’s compiling a file of Amy’s errors throughout their marriage, he’s even decided to contact the men Amy's meant to have slept with. Blake wants them to testify to prove that Amy was unfaithful [to him].”

Amy, 25, and Blake, 26, tied the knot in May 2007. [Photos: Splash News]

Since Blake has been locked up a year-plus - save for a brief release to rehab (above) and one farewell bonk - the songstress has admitted several affairs.

First, her personal assistant Alex Haines hit that repeatedly - as she wailed and moaned for Blake after sex, then smoked crack for breakfast. His words.

More recently, aspiring actor and former rugby player Josh Bowman was all over that while both were "holidaying" in the Caribbean paradise of St. Lucia.

At first, it was the five-time Grammy Award winner who wanted to start divorce proceedings, but Amy later changed her mind in an attempt to save the shaky relationship - then Blake Fielder-Civil decided to file for divorce.