Art student in need of a hard cock in order to draw it

my next task of the university was to draw a picture that expresses my sexuality. So I wanted to draw a huge cock because it is what I like the most. I assumed the model more sexy that I could, and I asked him to come to my house. When it arrived, I asked him to undress. The model was a little bit nervous, but I needed to see his cock. The penis was all I wanted, was very long. I wanted it very badly. But the first thing I did was masturbarlo. I needed his hard cock to be able to do the design. This has made me very dirty, I wanted something more than a simple masturbation. I made him a fantastic blowjob and I convinced him to fuck.