I was thinking more along the lines of casting dimension door and appearing in front of the girl, and then casting spell of 'Hold Monster Till the Cows Come Home' (custom spell).
That would hardly be fair.
There's a lot more fun spells in the Book of Erotic Fantasy
Disrobe - All non magical clothing and armour falls off
Unseen Lover - Invisable force that copulates with target of spell
Liars curse - Body part grows when telling lies
Depilatory - Removes hair
Grope - Telekeinetic groping
Phamtasmal lover - Attractive illusion exhausts target