Yeah, he definitely don't like her, at all, but why ?
Option 1 : He's jealous because her brother don't pay so mcuh attention to him now (lul).
Option 2 : Like his mother and most others nobles, he REALLY don't like the Castellio family, especially after the last incident, the Castellio could be a huge threat for all of them.
Option 3 : Something else, unknow reasons.
Yeah, the princess is the only good one in this family, i hope she will be estelle best friend, and maybe have her eyes cured with Estelle spirits power, it would be good.