I'm your chemistry professor coming to the lab to check in on your dissertation. It's been hot weather this week so I take some cold water from a jar, unknowingly ingesting an incredibly potent love potion you had been working on. I become overwhelmed with love and lust for you until I just can't stand it anymore and I have to fuck you. I make you my sex slave so we never have to be apart, I'm just so in love with you I have to make sure you can't escape me. So I tie you up permanently. I need to fuck you all day, every day, forever.