Sekisei's question (1)

It was a romantic genre webtoon about guy and a girl who are in a contract relationship to make their exes jealous but eventually they fall in love with each other.
The guy is a chef and has his own restaurant and was dating an idol.
The girl is a bag designer and she broke up with her fiancee because he said over the phone that he has never had romantic feelings about the girl.

That's all I remember, heeeelp ;__;