He starts disrespecting Susanne 's marriage to Carla and is n't happy about Jana 's relationship with Leonard von Lahnstein .
In the following events , Arno becomes full of hatred towards the Lahnstein family .
Arno starts disrespecting Susanne 's marriage to Carla and is n't happy about Jana 's relationship with Leonard von Lahnstein .
In the following events , Arno becomes full of hatred towards the Lahnstein family .