I'm a shy nerdy girl and you're more of the popular crowd, and we’re studying together. I secretly have a crush on you, and I want to get you to cheat on your girlfriend. We’re studying anatomy and sexual response to stimulation, and we just start discussing the topic, and I subtlety let you know that I know the method to achieving the biggest male orgasm ever. You don’t believe me, so I talk you into letting me prove it. I start by taking off my shirt, licking your shaft and balls then sucking your dick, deep throating. I then put your dick between my tits and you´re titfucking me while I'm asking if you're ready for the biggest cumshot ever and how I'm going to drain you. I then ride you with my face front and talking to you about how big this cumshot will be. I'm on my back begging for that cum and you pull out and cum all over my stomach and tits while I keep begging for more. I still stroke you for a while and then you end up coming even more. When we finish up, I suggest we’ll have to do more study times from now on.