I will also say, i don't think Tonkla loved Korn at that point. The way Tonkla yelled 'Korn, stop' makes me think he had fallen/started to care for Win and was simply using Korn, which is why he pushed him and why everytime Korn interacted with him at that point, he was emotionless. The only time we see him show actual concern again is when Win is the one in danger. Well all that and also the fact Tonkla and Win's actors seem to be a shipping pair so chances are, the authors wrote with that in mind.