A video of a cat mourning the passing of his sibling cat four months later has shattered viewers and brought them to tears.

Owner Rainn shared on her TikTok account, @rainn.without, that her black cat Grimm passed in February. Grieving a pet is never easy and it takes time. But nearly four months later, she noticed her other cat Boo was still heartbroken without his sidekick.

Boo meowed and stood next to Grimm’s collar in the June 13 clip. He wouldn’t let the collar out of his sight, carrying it throughout the house. The cat’s collar is his piece of Grimm that will never be taken.

Heartbroken that her cat is “still grieving,” Rainn is convinced the timing meant something. In the caption, she explained that they were bringing home a new kitten friend for Boo in a few days. She believes the fact Boo is crying at the collar is symbolic. “It’s like she’s telling me it’s ok?” the caption reads.

With over 3.2 million views, 763,100 likes and nearly 7,000 comments, TikTok viewers flooded the video with condolences. Like Rainn, plenty believe this is Boo’s sign to tell her enough time has passed and he is now ready to welcome home a new pet.

“He lost his shadow. I am so sorry for both of you…” commented a viewer, while a second said: “The price we pay for love, I am sorry for you both.”