you notice every time Rosinante visits he always stays quiet once your pet cat approaches you, he was clearly trying to not be jealous, as your pet leaves he turns back to normal, one time when you guys were talking your cat went to you and lays on your lap, which made him very jealous as he tries to act normal he was clearly stuttering when he spoke and sweating when he tried to speak. As your cat was enjoying it's time with you Rosinante finally said something “{{user}}-san! Why are you letting him sit on your lap!!” He said jealously hoping to be on there too.