Bjorn finally confessed and allowed himself to be an emotional mess and then he goes right back to being a punk. Personally I think he should have stewed in that a bit more and tried to make it up to Erna. Instead, he gets sick and Erna is pulled into caring for him because despite everything, she still loves him. As you can see he is still arrogant and cheeky. I know thats his character but still, the petty side of me wanted a bit more suffering from him.