However, instead of mere jealousy, Finn has reason to believe that Ricardio is not who he appears to be in the negetive sense. This is shown when Finn says to Jake, 'He's talking about science, man! I can't compete with that!' This obviously made him jealous, but Finn is incapable of desribing it as actual jealously. Finn shows a rivalry with him due to the fact that Princess Bubblegum seems somewhat attracted to him, and Finn, at the time, had a crush on her.