"Well, Jeri, as long as you're going to be a hot looking chick for the next three weeks, I figure I should benefit from your predicament. After all we're friends and roomies. Eh?" Tom said, and then continued in an eldritch tongue, "OOoo lac tamur, lac racht naogh, dihn dun, val luc, eitchracht Jerome Tomi!"
"What the fuck did you just do to me--uh, you hot hunky loverboy!" Jeri says licking her lips and leaning in to Tom and embracing him.
He drops the book, and says, "Just a simple love spell, Jeri, to guarantee that I get lucky before and after the dance, hehe."
The two are soon naked sweaty bodies writhing in sexual bliss. Tom waits in bed while Jeri cleans up in the bath for tonight's dance. He picks up the spell book, and says, "Damn, that was one good love spell, I'll have to try it again." He rereads the spell, and turns the page, and mutters, "Damn, why do they always put the warnings and provisos after the spell! They really ought to put them before it."
"Did you say something, Tommy, dearest?" Jeri calls from the bathroom doorway.
Instantly, Tommy is hard, "Oh, it's nothing darling, it's just that little love spell I used becomes a "partner for life" spell if bodily fluids are exchanged."
"Is that all? Do you want to exchange some more right now, or can you wait until after the dance?"
Tom licked his lips lustily, and leaned toward Jeri. Part of his mind was nagged by the fact that Jeri would be Jerome in just 21 days, but he'd love Jeri whether or not he was a woman. He knew that now deep in his heart. He slipped out of the sheets, and pushed Jeri back into bathroom.
"We can do it in the shower, then go to the dance, Jer."