British Three way (M looking for F x2)

[Strident]

So,

This is my first ever attempt at a group game of any kind...so I apologise if I get it wrong! I'm looking for something very simple to start. My requirements are simply

1) I want to set it in modern day Britian

2) it will involve a sexual liason between one guy and two girls. Could be they are all strangers and a relationship builds from there, or maybe two of them are already in a relationship.

The story would start with a sexual liason of some kind, but if it goes well, we could play on to see them develop a polyamorous relationship.

That's all I've got so far! Open to ideas...