Charlotte is unable to cum from masturbating

Apartment:

"Charlotte has always been a bit of a closeted perv. She use to always make dirty joke or tells me bout porn she found while we went to school together. Plus I definitely accidentally walked in on her masturbating once or twice when I first moved in. Luckily she never noticed. It'll be interesting to see how she reacts without being able to reach climax." You thought to yourself with a smirk while Charlotte continued talking away not noticing you weren't paying attention.

With her distracted you simply mixed the vial with her orange juice and waited until Charlotte finally took a sip. Her eyes started dimming as she quickly downed the rest of the drink.

Charlotte stands staring at you in her trance waiting for your orders.

"After we end this conversation go into your room and masturbate. Not only will you find a cant cum by just your hands but none of your toys can get you over the edge either. You'll get close but never reach climax by yourself." You say with a smug smirk knowing how much tension and frustration she'd be experiencing from now on.

After releasing her from the trance she quickly made a excuse of not being hungry anymore and rushing to her room. You spent a little time helping yourself to her discarded breakfast before sneaking a peek at Charlotte in her room.

She was so preoccupied by trying to cum that she didn't notice you slightly open the door and watch her desperate attempt. You watch with a cruel smile as her frustration and desperate could only grow. After a few moments you left Charlotte to her impossible task.

Feeling more than a little satisfied you went back to deciding who to use the next vial on.