Can't Find! Lesbian Encounter on a Train

[Dreadman1]

Hello!

Been searching for this story I read here 'I think' years ago. In short it goes like this:

Crowded train which comes to a sudden stop, causing two ladies (strangers) to grind their bodies together. They return each day to take things even further.

I have searched titles and tags and am still left with a 1000 plus stories to go through...not that that's a bad thing.

Thanks in advance!