F/Ml = Female/Male lead
You can choose out of 'Fl/Ml: A' and 'Fl/Ml: B' who you want to be the real F/Ml.
P.S I suggest it should be Fl/Ml: B.
***
In the start your main character is from a rich family and snobbish type of person, as a brat from a rich family they thought they could have everything, including people.
So They fell in love at first sight with 'Fl/Ml: A' and did everything to chase them, including schemes and just bring really clingy and annoying.
Eventually 'Fl/Ml: A' just loses their patience and they just become even more cold toward MC and just ignores, tells them to go away often, doesn't take any of MC's sincerity, fights with and just overall just completely humiliates, and crushes them.
MC's family, however, is either unknowing of these events (if you want the 'spoiling family' trope) or if you don't want a good family, they just don't care and believe that it's just a random crush/phase that they'll get over soon enough. They could also just not care for their or their antics anymore and gave up trying to cover for them any longer.
So now MC is full of despair and is in the type of condition in extreme need of comfort.
And suddenly Fl/Ml: A asks for a meeting and with the last of MC's hope they go and meet
Fl/Ml: A.
When they meet, Fl/Ml: A pops the question of leaving them alone and to stop loving them, crushing MC's feelings entirely. And throughout the time they were ignoring the MC, MC was slowly falling out of love with them because if the bad attitude they give them.
Now MC decides to leave the country because obviously no one cares for them.
There'll be a time skip and a couple years later MC is back.
They're all badass and indifferent to everything with bodyguards tailing them at all times.
Fl/Ml: A catches wind of this news and expects MC to be the same and all clingy towards them.
But of course they're not.
So now there is some social event for the top class and suddenly someone arrives riding a motorbike with another person on it as well.
The person who was driving walks in with the other person next to them and takes off their helmet. It's MC.
Everyone is shocked because of the reveal because the MC they used to know was all bubbly and wears glamorous clothes on the daily.
What the MC is wearing now would differ to that, giving them a rough but elegant vibe.
The person next to MC takes of their helmet as well and its Fl/Ml: B
And she's there to collect something and leaves (the object and who has it is up to you).
****
I think you can progress from here. 👌
Please PLEASE if you use one of my ideas can you comment the title so I can read them because I'm VERY interested in what you come up with, especially with one of my ideas.
thank you!