The pair has been together for 12 years and share four children.

*Harry Potter *star Jessie Cave is engaged to longtime love Alfie Brown

The pair has been together for 12 years and share four children.

By Leigh Blickley

April 13, 2026 12:04 p.m. ET

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'Harry Potter' star Jessie Cave is engaged to Alfie Brown. Credit:

Jessie Cave/Instagram

After over a decade together, Jessie Cave and Alfie Brown are making it official!

The *Harry Potter *actress and her comedian beau announced their engagement on Sunday in a sweet Instagram post. "12 years and 4 kids later …. It’s getting serious!!!" Cave, 38, wrote alongside a photo of herself showing off her new gold ring while snuggled up to Brown.

She also shared a close-up image of the diamond band via Instagram Stories. She set the photo to the Dixie Cups' "Chapel of Love."

Cave is known for her role as Lavender Brown in the *Harry Potter* film series. She is also an author, cartoonist, and playwright, and wrote and performed *Sunrise* in 2019, which explores her personal life, relationships, and motherhood.

Jessie Cave in 'Harry Potter and the Half-Blood Prince'.

Warner Bros. Pictures

She and Brown share four children, Donnie, 11, Margot, 9, Abraham, 5, and Becker, 3.

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Before their engagement, Cave and Brown had an on-and-off relationship for years and openly shared stories on their podcast, *Before We Break Up Again*.

To celebrate their 12th anniversary in January, Cave shared a reel of family photos. "Twelve years today since I got pregnant on our 'one night stand,'" she wrote.

"It is my natural response to try and find humor in things," Cave told *Fabric* in 2021. "I think that it is something that I learnt from awkward things happening early on in life and having to decide if it was going to break me, or if I was going to carry on. I have always found comedy to be the easiest therapy. I did *Sunrise* over 150 times. Towards the end, it felt like nothing to me to stand on stage and reveal this stuff about myself."

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She added to *The Guardian* at the time, “I don’t have any secrets, and I feel a bit safer in that way."

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