Earlier this week, entertainment journalist Marc Malkin reported via an unnamed source that Mandy Moore and musician Taylor Goldsmith had gotten engaged at their Pasadena, California, home. Neither Moore nor Goldsmith commented on the news publicly, but now 鈥 not unlike how Mindy Kaling鈥檚 costars spilled the beans on her pregnancy 鈥 Moore鈥檚 This Is Us costars are too excited to keep the news to themselves.

鈥淚鈥檝e seen the sparkler, but I have not heard the story yet because I have not seen her yet,鈥 Chris Sullivan, who plays Toby on the show, told ET at the This Is Us soundtrack release party on Wednesday. He divulged that Moore excitedly shared the news with her This Is Us fam in their show鈥檚 group chat.

鈥淪he just sent out an alert over our family text chain,鈥 he said. 鈥淪he just sent a photo and just wanted us all to know that this just happened, and so then we went on a response spree for about a day and a half.鈥 He added that he often makes GIFs out of the group chat, to which we say, GIF that ring, Sullivan!

Sullivan also revealed that he had just seen Goldsmith 鈥 whom he referred to as Moore鈥檚 鈥渂oyfriend, well, now fianc茅鈥 鈥 but that the Dawes rocker stayed quiet about the news. 鈥淗e鈥檚 quickly becoming one of my favorite people,鈥 Sullivan said of Goldsmith. 鈥淗e and Mandy are an incredible couple.鈥

Jon Huertas, who plays Moore鈥檚 (NON-JACK) on-screen husband Miguel on the show, also chimed to send some love. 鈥淭aylor is an amazing guy,鈥 he said. 鈥淚 love him so much. I love Mandy so much. I鈥檓 really happy that they鈥檙e going to be joining the club!鈥

Moore and Goldsmith recently celebrated two years as a couple together, a milestone she shared with her fans on Instagram. 鈥淭he best two years,鈥 she captioned a picture of the pair laughing with their arms draped around each other. 鈥淣ever not smiling with you, T.鈥

Around the same time, the singer-actress admitted that she felt like she was at a new stage in her life, and that building a home with Goldsmith was the perfect way to embrace it. 鈥淚鈥檓 ready to start over, start from scratch,鈥 she told People. 鈥淚鈥檓 so enthusiastic about embracing that. I can鈥檛 wait. It鈥檚 the best feeling.鈥 Here鈥檚 to the next stage for these two 鈥 congrats!

What do you think about Moore鈥檚 costars spilling the beans? Let us know @BritandCo!

(Photos via Jeffrey Mayer/WireImage + Alberto E. Rodriguez/Getty Images for Disney)