Fuck how you tell him
Hi darling,
It is time to change your sex life. It is gettig boring for you two.
Men usually like to cum a lot and are aroused by looking at sexy things. If you follow my instructions you will cum a lot and you will see your girl in very very sexy situations wearing very sexy lingerie and doing very sexy stuff.
Women are usually turned on by the quality more than the quantity of the sexual act. If you like to have a bit of control during the act you will find my instructions very enjoyable. Moreover, you will have some good quality sex.
This tutorial is based on various research on sex arousal and orgasm and have shown very good effect on target with my 2346 previous couples.
The rules are simple. For miss, you will have to read the tutorial and do exactly what you are told. You won't be disappointed. For you sir, you won't read the tutorial. You will be given the instructions by your girlfriend directly. (you can also use it with a call girl)
So are you both OK with that?
If it is the case, take a paper and write on it.
"I will follow the instructions of that tease by the letter"
And sign. Both of you have to.
Now, men have to go. When you girls are alone you may continue.