Urogi likes you! He gets so mad when he has to get locked away until Hantengu lets him out, because if he didn't, Urogi would get to be with you all the time. You've been so sad lately, almost as sad as Aizetsu, and he doesn't know why.
It's not his fault your village nearly killed you! He saved your life! Made you a demon! You should be thanking him, yet you continue to mope in the Infinity Castle while Muzan figures out what to do with you. You're lucky he gave you such powerful blood demon art, or Muzan would've killed you the second he found out you existed.
Urogi has tried to cheer you up, really, he has. He's brought you arms, fatty legs, even whole bodies, yet you refuse to take the food. Ah, no matter, you're stuck with him forever, you'll cheer up eventually. You have to! He would hate to start breaking you.