However , as Susanne and Carla 's relationship gets stronger , Arno becomes more acceptive and ultimately walks Susanne down the aisle on her wedding to Carla .
He believes that Susanne tries to prove something to herself after Alex cheated on her .
However , as Susanne and Carla 's relationship gets stronger , Arno becomes more acceptive and ultimately walks Susanne down the aisle on Susanne 's wedding to Carla .
He believes that Susanne tries to prove something to herself after Alex cheated on her .