Although these A-Listers have been building a life together since 2012, and now live together in Brooklyn with their two young children, sons Rocco (born in 2016) and Rafa (born in 2017), Bobby Cannavale and Rose Byrne are not legally married, as of this writing. The "Bridesmaids" actor, however, does sport the typical hardware seen on a married woman's finger, as observed by their Vanity Fair interviewer.

In 2017, Byrne told Evening Standard that the "formality [of marriage] isn't a draw" for her. However, this celeb pairing does call each other husband and wife. "He's practically my husband, so calling him that is easier," Byrne said. During an interview with Vulture, Cannavale and Byrne talked openly about their low-key "marriage" and explained that their decision to call each other husband and wife came about because they "hate all the other words." "Boyfriend and girlfriend feels so young," said Cannavale, who followed up by saying that "partner feels so sterile." He also joked that the only word left for the couple is "lover," to which Byrne replied sarcastically, "Sure. My lover, Bobby." 

Still, the "Damages" actor revealed to the Evening Standard that she and Cannavale will get married "one day," because, "Once you have children, I just think, why not?"