Bites And Kisses

Katsuki and Izuku both have their own way of expressing their feelings for each other. And Katsuki's shows of affection are a bit different than what people would expect. Where as Izuku either kisses or hugs Katsuki. Katsuki.... likes to bite Izuku at times. Of course he still once in a while hugs and kisses Izuku, but there is always a bite involved.
But what if one day.... the decides to change things a bit? And is there a possible one-sided love?