I picked this thread for a reason.

You pull away your hand at almost the same time as her orgasm, but thankfully she still is completely denied what she wants. You aren't sure if it happened this way, but your spell also prevents her from reaching an orgasm completely, although she has no idea. To her she felt another edge, even more intense than before.

"Fuck!" she screams. You look shocked, as she rarely curses. A devious smile comes to your face. You pin down her arms again and she flails her hips in pain. A few tears are even seen coming down from her eyes.

"Finish me, please! I can't take it anymore! Make me cum! I need to cum!"