Some Like It Scandalous by Maya Rodale

They are sworn enemies…
Theodore Prescott the Third, one of Manhattan’s Rogues of Millionaire Row, has really done it this time. The only way to survive his most recent, unspeakably outrageous scandal is marry someone respectable. Someone sensible. Someone like Daisy Swann. Of all the girls in Gilded Age Manhattan, it had to be her.

Pretending to be lovers…
Daisy Swann has plans and they do not involve a loveless marriage with anyone. But when a devastating family secret threatens to destroy her standing in society, suddenly a fake engagement with Theo is just the thing to make all her dreams come true.

And now it’s time to kiss and make up…
Daisy Swann aspires to sell cosmetics that she has created, but this brainy scientist needs a smooth talking charmer’s flair for words and eye for beauty to make it a success. Before long, Daisy and Theo are trading kisses. And secrets. And discovering that despite appearances, they might be the perfect couple after all.