In the book, the male lead was chasing the fl. The ml has has powerful mom in politics and would often scam his mother into transferring money to him so he can chase after the fl. The fl family moved to a new city when the fl went to u iversity so they can stay close together. The fl dad ended up being successful in the new city. The ml mom pretended to be someone else so she can meet the fl and her family.
I'm not sure if this is it, but I tried scrolling through my history to check my recent reads because the plot was very familiar, and I hope it helps Little Brat is Sweet and Sassy Hi sorry, I checked again and its actually this one Forced to Date a Bigshot
Forced to date a big shot (This book fits your description, but I’m not if this is what you at looking for. The ml is older than the fl by around 7 years and the fl’s father moved to the new city to open a company.)