Waller-Bridge has been in a relationship with Oscar-winning filmmaker Martin McDonagh since 2018. Despite putting on a loved-up display during the 2023 Cannes Film Festival red carpet, the pair tend to keep the details of their relationship private.
The couple were first thought to be linked in 2017, when Waller-Bridge was spotted at McDonagh's screening of his movie "Three Billboards Outside Ebbing, Missouri." They were seen sharing a kiss a year later, when he won a Golden Globe for best screenplay, and have been together ever since.
Despite keeping their relationship under wraps, Waller-Bridge gave a small insight during an interview with Vanity Fair in June. When asked if she shows him her work, she replied: "We don't really share anything beforehand." When she is asked if this is because it would feel demoralising, she says, "Probably a bit of that. And also, I just really, really fancy him. So if you show someone something, and you fancy them, it can become this blur."
While she admired McDonagh's work before they became an item – which includes "The Banshees of Inisherin" – she is always eager for his opinion of her work. "It's really useful being with someone who I think is a genius, it just ups your game," she says. "I would always have wanted Martin McDonagh to think of my work as good, whether I was with him or not. I find out now, either way!"
Rumours that the couple had taken their relationship to the next level began swirling on 24 Sept. after Waller-Bridge was spotted with a sparkling ring on that finger. Wearing a stunning pink suit, she attended the nuptials of her brother, Jasper, and "Downton Abbey" actor Michelle Dockery, alongside her partner, McDonagh. POPSUGAR reached out to reps for Waller-Bridge, but did not immediately receive a response. We'll be waiting to hear if wedding bells are in the air again for the Waller-Bridge family soon.