Rooney isn’t the only Mara sister with relationship news.
Kate Mara and Jamie Bell are engaged, her rep confirmed to Page Six on Friday.
On Sunday, Kate, ready to watch some football, posted a photo of herself on Twitter wearing what looked like her engagement ring.
“#NYGiants #Steelers,” she captioned the pic. The 33-year-old is the great-granddaughter of the founders of both the New York Giants and the Pittsburgh Steelers.
Mara and Bell first met on the set of “Fantastic Four” in 2014 and rumors of them as a couple began when they were spotted at the 2015 Met Gala.
Bell, 30, was previously married to “Westworld” actress Evan Rachel Wood. They have a toddler son together.
Meanwhile, Kate’s sister Rooney and actor Joaquin Phoenix have been holed up in the desert together. As Page Six exclusively reported earlier this week, the pair “found love” on the set of their biblical film “Mary Magdalene.”