Trying to come up with some sex games to play or write about in my story

[SS100]

I'm not sure how I can do this but I was wanting to write a sex game to play between my main couple in my story. The Limitations are as follows in this role play:

1. Has to be inside a House or confined space where no one can see them
2. It is only about two people
3. The woman is the "virtuous, innocent one"
4. The man is the aggressor and person "Chasing" the women

Anyone got any ideas?