Twisted Bonds by P.G. Van, M.V. Kasi

He is royalty from the East. She is an orphan from the West. Their worlds are meant to collide…

When Mihir saw Chitra for the first time, he was utterly captivated by her beautiful smile. When she offers to help him, he readily agrees, as it would mean spending more time with her.
But it isn’t until later that he realizes the girl he is falling in love with has mistaken him for someone else.
Note: This is a sweet short story with a HEA. It also includes an extended epilogue of the bestselling Sands of Singoor series.

Tropes.
Love at first sight, Rich boy poor girl, royal, contemporary