Alberto E. Rodriguez/Getty; Jeff Spicer/Getty
The A Simple Favor actress, 36, and Barry actor, 44, have broken up after over a year together, Entertainment Tonight reports.
Reps for both actors declined to comment for PEOPLE.
Back in January, a source told PEOPLE that Kendrick and Hader had been "quietly" seeing each other for more than a year. The source added that they didn't start dating until "well after" they wrapped filming their 2019 Disney Christmas movie Noelle, in which they play siblings.
The source said at the time, "They are both very private people, and with the pandemic it was easy to keep it quiet. They're both hysterical so they must keep each other laughing all of the time. She's really, really happy."
Anna Kendrick; Bill Hader
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Another source said in February that Kendrick and Hader made a "great couple" together: "You can see the chemistry when they're together. They have a really fun rapport, very sarcastic and funny but all coming from a place of love. ... They're affectionate but it's the way they look at one another when the other is talking, you can see they really love each other."
PEOPLE confirmed in July 2020 that Hader and former girlfriend Rachel Bilson amicably broke up six months after making their relationship public at the Golden Globes. Bilson and Hader had starred together in the 2013 romantic comedy The To Do List. Maggie Carey, that film's director, was married to Hader from 2006 to 2018. They share three daughters: Hayley, 7, Harper, 9, and Hannah, 12.
In March, Hader told The Hollywood Reporter he doesn't talk about his dating life in order to protect the privacy of his kids. "They just want me to be their dad," Hader said. "They just want me to sit and watch Encanto over and over and over again. So that's what I do."
Back in 2020, Kendrick opened up about her dating history while discussing her HBO Max series Love Life. She told The Sydney Morning Herald she is "just so happy that I'm clearer now about what I will accept from people in my life."
"The real arc that we wanted was to show how we learn from each relationship. Even though our relationships end, it doesn't mean they are complete failures," explained Kendrick at the time. "People come into your life and you grow and they change you, and what you learn from them might be really positive or it might be negative."