The offer

The trio looked at each other and giggled, “That’s what I thought,” Ginny responded.
Harry stripped off what remained of his clothes, and knelt before Luna, who was lying on the left. Harry put his hand on her mound and found it was not just wet, but seemed to be breathing against him… oh yes she was ready for him. With a single thrust, he mounted her and began pounding away at her fragile frame. The month-long dry spell almost proved his undoing as he nearly came inside her at the first thrust, but fortunately, he managed to hold off.
Hermione cast some kind of spell, apparently the timer, as he began rutting at the little blonde. Luna had grown up beautifully. Still, almost ethereally thin, she had grown perfect little A-sized breasts that complimented her frame, and her hips were all woman. Her long, blonde hair went down to her buttocks and framed her lithe body as he savaged her cunt. She had a very tiny waist and super-long slender legs, and could easily be a model in the Muggle world if it were not for her odd personality.