I met two girls in a hostel travelling. I slept with one of them, Jenny. But I also got pretty physical and flirtatious with the other one, Kate, during that week, though we didn't have sex or even kiss. Kate definitely knew that I had slept with Jenny, though that didn't stop her flirting, and being physical with me.

They are now visiting my home country (England), and coming to stay at my place for a few nights. I live alone.

Is there any way I could try to steer this towards a threesome? Are there any techniques, moves, strategies that might push things in that direction? It would be so hot if this could happen

The only thing that might stop it, is that these two girls have been best friends since high school, I think. That might not matter, but I also realise that they might just not be into doing stuff with each other. I also don't want to be too bold and risky, and throw away any chance of sleeping with Jenny again. I don't want to scare her off by saying I want to fuck her best friend. How do I play this?

Do you guys have any ideas? Would be so awesome to make this happen, though I realise it might just be impossible