Ek story dhundne me help chahiye

[UnSpokenPages19]

I am looking for a story , I don't remember where I read it

Story line as below

A brother visits his sister's house, her husband is on your.
He stay with her at her place.
Both get bored soon.
He remembers his sister's birthday is coming next week.
He plans a surprise for his sister.
Plans for a trip with her, surprises her with cake on midnight.
Fulfills all her wishes on her birthday.
She finally allows him to have sex with her

If anyone knows this story please tell