@icarushector
Well, to steal Katarina, you first have to educate her what love is >_>
On top of which, you're part of a closely knit-group of friends with her at the center, so you have to convince her to risk damaging all those relationships to establish your exclusive relationship. Remember then, you have to take her away from the crown prince of the country, who is portrayed as vastly competent in most areas, and is already in a fiance relationship with her. So on top of that, you can probably kiss the ability to go out with her publically without inviting "thieving cat/dog" remarks directed at both of you, goodbye.
So you're actively fighting for the position against two princes, a future brother-in-law, two girls, super-bishonen with a best friend winggirl, and potentially an assassin-type brainwasher.
Or... you could just be her nakama(tm) 😎