Guys help me

I was looking for this manhwa, i remember there is this duke i think and there's a saintess with dark hair she's trying to blame the duke for something but then the princess (fl if I'm not mistaken) help the duke by saying she dont remember giving the saintess permission to talk to her. If I'm not wrong the princess has light color hair and the duke has dark hair color.

I'm sorry if its not spesific enough. i saw this scene from tiktok and I'm dying to find the title. Anyone know this manhwa? ╥﹏╥