SecondLeadQueen:
Watched all of this except Ms.Perfect, I will give it a try. Thank you!
You're welcome. Just a heads up, the genre is a bit different (mystery / thriller, almost horror) and the romance isn't the primary focus of the plot, but that's part of the reason it's a slow burn.
The ML doesn't have one main ex, but he starts out with a lot of "sugar noonas" that finance his lifestyle. The FL definitely isn't his normal type, so he doesn't realize he's falling for her right away. He still goes out of his way to secretly get her a job at his firm when she needs help, and things escalate from there. Hopefully it's close enough to what you're looking for!