Pls help (Im having a headache trying to remember this manhwa),

Okay so it has taken me hours trying to search for this manhwa. My memory might've been jogged or something (I hope not) but from what I remember from a youtube short I watched, the manhwa has a fl as a knight and ml as a prince and the prince set up the fl into an arrange marriage for whatever reason. Fl has black hair and prince has blonde, also it seems like they are always bantering and fighting. I don't think ml really love fl at first as it's just a marriage for convenience I guess. Would really appreciate it if somebody knows this. Have a good day bbg (｡•ᴗ-)✧