HELP ME FIND A MANHWA (again)

I FORGOT THE NAME AND I DONT HAVE IT LISTED. I REMEMBER THAT (I think FL was reincarnated/isekai'd into the manhwa) OR SMTH SO SHE KNOWS SHIT SHE MIGHT BE A VILLAINESS. BUT LIKE SHE GOES TO THIS MAGE OR WTV THIS DUDE WHO IS HIDING HIS IDENTITY FROM FL. I remember this one interaction where the ML has a pet (cat idk) AND THE FL HAS CATNIP SO SHE TAKES OVER HIS PET AND GAINS THE PETS TRUST and ml tries to win over FL with his real identity while keeping his mage identity hidden but FL doesn't pay much attention to them. They end up going to a type of ball event matching (pink) and ML gets up earning a title mostly given to women PLEASE HELP ME FIND JT. OG FL ALSO REALLY WANTED A PINK DIAMOND BUT NEVER GOT IT UNTIL NEW FL APPEALED TO HER FATHER idk if I'm confusing it with another one BUT PLEASE HELP ME FIND IT