When Mandy Moore recently got engaged to Dawes frontman Taylor Goldsmith, she immediately shared the news with her This Is Us costars via group text. Chris Sullivan (AKA Toby) and Jon Huertas (AKA Miguel) couldn鈥檛 hide their excitement for the 鈥渋ncredible couple,鈥 and now, Moore鈥檚 on-screen children are chiming in on the news. It is, predictably, adorable.

Speaking to ET, Sterling K. Brown and Justin Hartley 鈥 AKA Randall and Kevin, two of the 鈥淏ig Three鈥 Pearson kids on the show 鈥 gushed about Moore and Goldsmith鈥檚 relationship.

鈥淚 told her, 鈥榃elcome to the club.鈥 It鈥檚 a great club to be in,鈥 Hartley, who is engaged to actor Chrishell Stause, said. 鈥淚鈥檝e spent enough time with them to know they don鈥檛 need advice,鈥 he continued. 鈥淭hey鈥檙e a happy, happy couple. So it鈥檚 really great to be around; it鈥檚 fantastic.鈥

Sterling K. Brown echoed Hartley鈥檚 sentiment, sending his love to Moore and speaking in admiration of her relationship with Goldsmith. 鈥淗ugs and kisses and all love,鈥 he said. 鈥淪he sent [the news] on our text thread when she showed us the ring, and we were all so excited for her. Taylor鈥檚 such a great guy, and they鈥檙e so beautiful together. I couldn鈥檛 be happier for her.鈥

The Pearson family dynamic, both on- and off-screen, is truly a thing of beauty. Moore and costar Milo Ventimiglia鈥檚 on-screen marriage makes them one of TV鈥檚 best couples ever, and we鈥檝e seen just how supportive they are IRL too: When Moore accidentally gave herself a black eye, some of the cast and crew gave themselves faux shiners to match.

Summing up his happiness for Moore, Hartley expressed a sentiment that we can always get behind, but especially for this amazing 鈥渇amily.鈥

鈥淎nytime you can be around someone that finds happiness like that, and they found happiness in each other, I鈥檓 a huge fan of that.鈥 Us too, guys.

What do you think of the bond between the This Is Us cast? Let us know @BritandCo!

(Photos via Alberto E. Rodriguez/Getty Images for Entertainment Weekly + Rich Fury/Getty Images for THR + Matt Winkelmeyer/Getty)