I watch a lot of porn and surf a lot of tumblr sites. While on tumblr, I found a video of my research assistant (female, hot) sitting in a car seat in short shorts masturbating herself and looking into the camera. I've been sending the picture to her through an anonymous email accoutn every few weeks or so. It started off really innocent with an 'Is this you, it looks just likes you.' subject line and the pic, but over the past few months I've let it escalate. I tell her how hot she is, how it turns me on to look at the picture, how I jack off thinking about coming on her face, and how some day I might use the picture to blackmail her into being my sex slave.

I see her in the office after these emails and she looks flustered and confused. Sometimes I'll schedule appointments with her in advance and then send the photo again and the message right before so she'll be distracted through the meeting.

Its not nice, but it turns me on intensely to know I have this kind of control over her.