So, from the story, Unexpected Us, I thought of another story idea.
In Unexpected Us, Ranbir and Rhea marriage didn't happen, but can you write a story where Ranbir Rhea marriage really goes through and after marriage, Ranbir realizes that he doesn't love Rhea and loves Prachi??
The rest of the background is same, i.e. PRANBIR were childhood friends but Ranbir got impressed by Rhea's modernity and thought he loves her.
But after marriage he realizes that they aren't compatible.
This is the general idea. See if you can write a story on this idea