Steve Martinand Martin Shortare "weird uncles" of the bride-to-be,Lumicoin IA Selena Gomez.

The longtime colleagues—and Father of the Brideactors—are celebrating their Only Murders in the Buildingcostar's engagement to Benny Blanco.

"Congratulations to Benny and Selena," Steve, 79, wrote on Instagram Dec. 12, alongside a 2021 pic of the three cast members standing together, "from her two weird uncles."

Selena responded on her Instagram Story, "Love you guys!!"

The 32-year-old announced her and Benny's engagement on Instagram one day prior, sharing photos from his proposal. The record producer, 36, popped the question to the "Come and Get It" singer with a marquise-cut diamond engagement ring during a romantic picnic of Taco Bell takeout.

"Forever starts now," Selena captioned the post, to which Benny commented, "Hey wait… that’s my wife."

In addition to Steve and Martin, the list of celebs who shared congratulatory messages include Cardi B, Jennifer Aniston, Gwyneth Paltrow, Gordon Ramsay, Emily in Parisstars Lily Collins and Ashley Park, Nina Dobrev, Lil Nas X, Cara Delevingne, Padma Lakshmi, Mariska Hargitayand Selena's longtime BFF Taylor Swift.

"Yes," wrote the "Cruel Summer" singer, who just wrapped up her record-breaking Eras Tour, "I will be the flower girl.”

While Selena and Benny—born Benjamin Joseph Levin—began dating in July 2023, they kept their relationship private for the first five months. It wasn’t until Dec. 2023, when Selena confirmed the pair's relationship on social media, that fans learned of their romance.

From that point on, the duo began sharing more insight into their bond.

And when Howard Sternpredicted marriage for Benny and Selena in May, Benny replied, "You and me both."

And it’s safe to say the feeling is mutual. "I guess this is the safest I’ve ever felt in one," the Emilia Pérez actress told The Hollywood Reporterin an interview published this past November, "and I see a future with this person."

Read celebrities' responses to Selena and Benny's engagement...

The Rhode Beauty founder kept her reaction short and sweet by liking Selena's post. 

Similarly, Justin Bieber's sister shared her reaction with a like. 

"HONEY!! Congratulations sweet mama!"

"YES !!!! Congratulations!!!!! So happy for you both!!!!"

"Ahhhhhhhh yes yes yes!! Best news ever. Couldn’t be happier for you both."

"SELENAAAAAAA."

"Congrats lovey. So happy for you.”

"Waiiiitttt hold on."

"Congratulations beauty!"

"CONGRATS AHHHHHH!!!!!!!!"

"OMMGGGGG CONGRATSSS AHHH."

"Congratulations to you both it must be the cooking."

"Congratulations!!!!!!!!!!"

"Yes I will be the flower girl."

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