Stories of Tie Up Games

I had this idea for an interesting take on your classic robbery/home invasion story theme that anyone could use if they find it interesting enough. Basically instead of the stock standard theme of girl is in the house when the robber comes and ties her up, instead, there could be two people in the house, say a boy and a girl who are roommates (it could be whatever) and when the robber breaks in, they get stopped by the boy who just happens to fantasise about tying up his roommate. He then makes a deal with the robber to pretend that he is being forced to tie up his roommate when in actuality he just really wants to tie her up.

This is just food for thought really, not a request to anyone but if you feel like writing the story then, by all means, go ahead.

It sound interesting, I may try to write it, but need to get inspiration. Also any other details will you like to have or something?