hmmm in my opinion i dont think they like arien more tho. i think its only bc shes the one doing the talking most of the time thats y they have their attention to her the most. and yes arjen seemed to be introverted, but hes the type who handle the situation when things get out of hand.
I feel like Arien is being liked more by others than Arjen but well, Arjen seems to be very introverted.
I love both of them though