The Sun newspaper has been criticized by domestic violence charities for an article in which JK Rowlings ex said that I am not sorry to have beaten her.
As part of a blog Criticism of their comments on transgender peopleThe Harry Potter author said her first marriage was "violent".
Jorge Arantes said the sun He hit Rowling when she left him – but added, "there was no ongoing abuse."
The newspaper said it had no intention of "enabling or glorifying" domestic abuse.
Critics have accused the author of being transphobic for her response to an article on "Menstruating".
Rowling said her personal experience of domestic violence and sexual assault and her concern about protecting safe spaces for women are some of the reasons why she commented on transgender issues.
The headline on the front page of the Sun on Friday read: "I hit JK and I'm not sorry".
Mr. Arantes, who shares a daughter with Rowling from their marriage, told the newspaper: "Yes. It is true, I hit her. But I didn't abuse her." When asked about his answer to her claims – including the fact that the relationship was violent – he said, "If she says that, it's up to her. It's not true that I hit her."
Nicole Jacobs, England's Commissioner for Domestic Violence, wrote to the newspaper that she was "deeply concerned" about the story.
"It is unacceptable that the sun has decided to repeat and magnify the voice of someone who openly admits to violence against a partner," she said.
"Irresponsible and dangerous"
The charity Women & # 39; s Aid said the front page of the newspaper had "negative effects", adding that it was talking to the sun about the voices of survivors of domestic abuse.
"Headlines are important," added it.
Around 20 activists against domestic abuse – including the managing director of Women’s Aid – wrote an open letter asking the paper to apologize.
"It is irresponsible and dangerous to respond to a woman who shares her experience of domestic abuse and sexual assault by providing her perpetrator with a platform to trivialize the abuse to which she has been exposed." the letter said.
The Ipso press office reported having received more than 500 complaints about the Sun article.
A spokeswoman for the sun said: "It was certainly not our intention to" enable "or" glorify "domestic abuse, but to reveal the complete lack of remorse for a perpetrator. Our sympathy is always for the victims."
The spokeswoman added that the tabloid had a "long history of working for abused women" and "through which we have empowered countless victims to report and seek help".
Politicians have also criticized the sun's coverage. The Liberal Democrats called on the Sun to donate Friday's earnings to Refuge – while Labor's shadow minister for domestic violence and protection, Jess Phillips, said "doubts and unbelief" had benefited the abusers.
The row over Rowling's comments on transgender issues began last weekend after she replied to a headline in an online article on "Menstruating" by writing in a tweet, "I'm sure it's a word earlier for these people. Someone help me out. Wumben? Wimpund? Woomud? "
Harry Potter actor Rupert Grint is the latest star to express his support for the trans communityafter Rowling's comments.
His co-stars Daniel Radcliffe and Emma Watson, include those who have already spoken.
In her blog, where she defended her comments, Rowling said: "I've been in public for over 20 years and have never spoken publicly about being a survivor of domestic violence and sexual assault."
She added, "I am not mentioning these things now to gain sympathy, but out of solidarity with the large number of women who have a story like mine and who have been blurred as bigots because of concerns about same-sex spaces."
If you or someone you know is affected by domestic violence or violence, the following organizations may help. If you are experiencing gender identity issues, a list of organizations that offer support and information you'll find here.