Who knows. Maybe it's the shitton of alcohol and lord knows what else in his system. Or it could be because without the Carnies, he defaults unconsciously to his next Family member. Something like that. It's no like he actually likes Squalo or anything. He's just super possessively jealous of him for no determinable reason.

"I get three guesses and the first two don't count, right? But I guess it just means we know it's coming eventually and we can maybe start to prepare for it. And don't I know it! If I could, I'd get someone else to sign all that shit for me."

You know, like a loud ass secretary that makes sure the pointless stuff never sees his desk. God bless his shark-loving spam filter.