No, I haven´t broken any promise. You can see me nude. In the early morning I´m back and we can cuddle in bed.
And no, it´s not cheating. If you don´t want that your beloved girlfriend is going out tonight and fuck some other men you can leave me. Immediately! And no, I wouldn´t give you the key.
If you stay here in my apartement and if you want to be my boyfriend and my future husband, you have to accept my needs.
Sweetheart, it´s hard for me too, not to have sex with you. But it´s for our future marriage.