Sarah revealed the couple tied the knot in an intimate ceremony in Brooklyn in front of her housemates and Succession co-star Ash Zukerman, who served as witness.
The bride donned a vintage velvet Chloe coat and both she and Dave wore Blundstone boots.
She laughed: "We had matching Blunnies."
The Soulmates actress reflected on how the pandemic has been a "ride" for her and she feels "very fortunate" that it was a happy time for her.
She added: "It's been a ride. There's so much heartache and sadness in the world, but on a micro personal level, I've been very fortunate," she mused on the rare bit of providence the pandemic brought her personally despite all of the tragedy it caused.
"There's a really lovely grace in that without the pandemic, we might not have ended up together so quickly."
The Predestination actress had hoped to work in her native Australia when restrictions eased but found the paperwork would be too difficult.
She explained: "I did almost, but unfortunately because the Australian states are operating like countries, I had to turn it down because I didn't want to get stuck on the wrong side of the border."