Cordero, 41, had battled the coronavirus for 95 days before he passed.
But on Sunday she shared her ultimate loss. "God has another angel in heaven now. My darling husband passed away this morning. He was surrounded in love by his family, singing and praying as he gently left this earth," Kloots said in an Instagram post.
Hamilton's Lin-Manuel Miranda tweeted that the loss was "devastating."
That sentiment was shared by actress Jenna Ushkowitz, who starred in the television show "Glee" and Broadway play "Waitress," which Cordero also performed in.
Ushkowitz tweeted "devastated," before sharing another tweet begging for people to wear masks to protect themselves and others.
Actor Zach Braff also posted multiple times on Twitter about how great of a loss Cordero's death is.
In another tweet Braff said, "Nick Cordero fought as hard as he could for 90 days. Wear a mask. F*** Covid."
Academy Award winner Viola Davis shared her condolences on social media as well.
"My condolences to you Amanda who fought and loved so hard....so sorry for his little one. My heart is with you. May flights of angels...."