The country was falling apart, his father the king was incompetent, all the workload to run the country fell into his young shoulders, the country needed constant donation from his beloved family because of the bad government of the previous generation. Sure it's wrong to not meet her through all that bad luck of failing to meet her due to unexpected accidents, but dude didn't have any free time since childhood. He is in constant work everyday except ahen he is sleeping.
That's the setting of the story.
I think what he was lacking is proper communication with Julianna.

I really don’t understand This prince, if he is really obsessed with fl. Then why the heck didn’t he make an effort on meeting her whenever he has FREE TIME for the past 6 months of absence or even 10 years of time????? If he is soooooo obsessed with her then why the heck would he not clear any rumors about him and amelia?? Yeah, he is unaware of it but still??? He is clearly not doing any effort not until kyle challenged him to a fight….. ???????