alum's estranged husband Corey Bohan filed his divorce response.
Per the legal document, which was filed on Tuesday, Bohan is seeking joint custody of his and Audrina's 16-month-old daughter, Kirra, in addition to spousal support.
"She's single right now," the insider tells Us of the formerstar.
Patridge and Bohan started dating back in 2009, following her breakup from MTV's bad boy Justin "Bobby" Brescia.
With several splits sprinkled throughout their longterm relationship, the couple appeared to be going strong since their last breakup took place in March 2011.
"We'd go out and I felt like I had to defend them, and so with Corey I feel like I'm safe—he's a guy's guy…
He's not afraid to get dirty and that's what I like about him.