It's easy to bully someone but it's very likely that if you try to pull too much on that point at some point that little fawn can turn into a monster. Putting that aside why not give him a route to dominance by turning your little guy into a monster how far can you go to establish your relationship he already saw that the pure flower he longed for is nothing more than one that gives its nectar to anyone so why wait even if it means killing your supposed best friend, who to your love is weak to submission? Why not submit her even if it means breaking your relationship.
Turn the young hero into an even worse villain.
Yes, I prefer to be ambiguous so as not to get too much of my ideas into the story.