You know what. Maybe every time he cockblocks himself in the flashbacks they actually did get closer. But because she died he changed his memories so he wouldn't break mentally.
I can imagine some dude off in the corner just trying to enjoy his bagel and coffee after a long day only to witness this shit show. He doesn't want to look but they are so loud they keep drawing his attention so he ends up hearing the full argument lol
Mc: Hi prince. I completely submit. I will make sure to stay out of your way and live a quiet life. The throne is yours.
Prince: Yep. Shes up to no good. I must destroy her.