The actor's friend and roommate claims Pacheco is a bad mother who threatened to extort the actor
Credit: JP/JFXimages/Wenn; Desiree Navarro/WireImage

As Jeremy Renner’s divorce battle heats up, one of his closest friends is rallying to his side – claiming the actor’s estranged wife is an extortionist who only married him for a green card.

Kristoffer Winters, 41, who considers himself like a brother to Renner after their 20 years of friendship, says they were living as roommates during much of Renner’s 11-month-long marriage to Sonni Pacheco, according to court documents obtained by PEOPLE.

During that time, Winters alleges he witnessed multiple examples of Pacheco’s negligent parenting – both during her pregnancy and after the birth of her and Renner’s now 2-year-old daughter, Ava.

Winters believes Pacheco – who was born in Canada – only married Renner to help her gain U.S. citizenship.

He also claims she made multiple appointments to have an abortion during her pregnancy – but ultimately decided against it because “a marriage to Renner would improve her financial situation.”

Winters also claims Pacheco has made threats to extort Renner with an embarrassing video she possesses.

“I heard Sonni say at least five or six times … that Jeremy should be nice to her and not fight her on green card or money issues or else she would release intimate videos of him to TMZ,” Winters says in the papers.

TMZ denies ever being offered such a video.

Winters also says he saw Pacheco smoking up to five cigarettes and drinking “one or two large glasses of wine” every day during her pregnancy, while he was living in their guest house.

After Ava was born in March 2013, Winters claims Pacheco drank “about a bottle of wine per day” while breastfeeding. He says she stopped breastfeeding Ava after six weeks because she felt “guilty” about drinking alcohol.

Winters goes on to accuse Renner’s estranged wife of multiple examples of neglectful parenting – including an incident in which she left the child home alone at night to go partying with friends. Ava, who was 18-months-old at the time, was allegedly by herself for 15 minutes before Winters made it back to the house.

For her part, Pacheco vehemently denied most of Winters’s claims to TMZ on Wednesday and is continuing to pursue full custody of Ava and additional child support from Renner.

Pacheco’s attorney could not be reached for comment.