
This HaBO is from Miglena, who wants to find this romance:
Hi all, I’ve tried everything and can’t seem to find this book that I read about three years ago.
It’s a contemporary romance, set in NYC, high steam and some kinks involved, decently written and on the lengthier side.
The hero is filthy rich and in his 30s; heroine is 18/19 but acts rather mature for her age. She is working in his office on a temporary cleaning gig but is actually wealthy herself, does it to spite her family and/or because she needed the cash without their knowledge. Couple start sleeping together right away and she doesn’t go back to work. I vaguely remember the heroine being inexperienced and the hero almost not wanting to go through with it, thinking she’s a virgin. Last chapter we find out that heroine is pregnant. Because of that, the hero doesn’t want to be as crazy with their kinks anymore although she wants it rough. They invite her tell her/or his family (a brother or a grandmother?) that they’re getting married. Epilogue chapter we learn that they’ve had a few kids (maybe 3?) and are sitting at a beach (maybe Hamptons, maybe all was set in NY), either 8 or 10 years down the line. That’s all I remember. Thanks!
It is noy Buy Me, Sir by Jade West.
Nothing related to mafia, no daddy kinks, hero isn’t connected to heroine through his best friend, relative, etc. and they meet for the very first time and start their arrangement.
Ring any bells?

Most of the descriptions sound very similar to K. Webster’s Skyscraper Cinderella trillogy.