i felt my heart start to beat faster and waited for it to happen . `` is n't that what boyfriends are supposed to do ? '' she licked her lips , shifted against him , closed her fingers more insistently . do n't waste his time and remember to say thank you . '' this is exactly what i 'm talking about . `` even if you do n't do this thing , you need to be careful . it was still empty , but the sound of a flushing toilet gave him a clue as to where she was . 