Can marriage come before love?

One day, Natsuki Minase suddenly receives a marriage proposal from Takamura, a young and handsome partner at the law firm where she works, even though they're not even going out. To Natsuki's surprise, Takamura tells her, "I don't actually love you, but if I'm going to have to marry someone, I feel like you're the best candidate."

Is this suppose to be a contract marriage? Or is it just a sham?
This is the start of Takamura's surprising relationship with a very confused Natsuki...!

A woman who wants to fall in love before marriage vs. a man who wants to get married without love... A heartwarming contract marriage love story!

(Source: Petit Comic, translated)