Masturbating in the bathtub until orgasm

My friend said that a video in the bathtub always goes down well with modelling agencies. So I got into the bath and presented myself from my best side. Naked and naturally horny. It was actually only supposed to be an erotic video. But then? My girlfriend was a bit shocked when I started doing it to myself in the bath. Somehow she was shocked at how loud and unrestrained my orgasm was. I'm just a dirty little slut and hope that I get the job as a model with this introductory video.