I've been trying to remember a manga I've read a long time ago with no luck.
I remember the beginning a bit, if you know any that sound similar please list it.

This is kinda what I remember, it might not be accurate please keep that in mind.

They were both at a bar or club I believe, he saw her (she might have known him or both might have known each other) they both end up in a room above the bar or club. He ends up sleeping with her (if I'm remembering right I think he was her first). I don't remember what really happened next but I remember that he said a bunch of hurtful things to her and leaves. I think she ends up pregnant.

It's not a long manga. It was a one shot or a 5 chapter one that much I remember.
List any that seem to fit this.

Remake thread without a useless poll

A just ruler amongst tyrants