There are plenty of things you can do more naturally that will stoke her imagination.
1. Cook a good meal.
2. Be charming, act like you do this frequently. (But don't say it.)
3. Have things lying around that pique her interest. (Pertaining to hobbies, travel, socializing, etc.) A pic of you with an ex would be bad, but a pic of you with a group of friends, or in a foreign country, or skydiving - you get the idea. If you play guitar, leave your guitar out. If you draw, leave a drawing out.*
4. If she does come to bed and you fukk, keep an OPEN box of rubbers in the nightstand. I.e. you're grabbing a condom per usual for you. Again, don't verbalize this, just do. If she makes a comment ("how often do you do this with girls?") just give a joke answer. "Six days a week, tomorrow's my day off."
5. If she stays over, be sure to have something to do early in the day, not too early but no later than after breakfast, to get her out. "I've gotta meet some friends at noon blah blah."
*When she asks about things in your pad, and she will, drop hints in your answers. "Oh, I got that guitar when I was in Argentina." It'll give her something else to ask you about. Again, try to steer clear of talk of exes unless you can't avoid it. "A girl I know gave me that" is better. Who, she'll ask. "Just an old friend." Then take the convo somewhere else.
A lot of this will be improvisational, so relax and don't try to script too much.