Draco grinned at her. He was tempted to tell her that she'd know soon enough but he didn't want to overplay his hand. Smiling at her, Draco simply said, "You know what? I have a surprise for you this Sunday." If all went well, his surprise would put her in the mood…
Seeing her jump, Draco knew to take advantage of her state as long as she would let him. Knowing Pansy would jump and buck as he stroked her, he withdrew his fingers and instead flicked them over her clit quickly back and forth.
Letting her kiss him, Draco pulled back slightly from time to time to make her stretch to reach his lips.