Trust, you say. Who put the words in your head?

I know this guy in the year under me and he is allways braging about how clever he is, after all he is a man -.- and I was stuck in math, so today I asked him for help, as a last way out. I gave him the book, he reads the puzzle twice, looks at me as if it is brain surgery, read it again. Mumbles I need a smoke, leaves me alone for five minutes, then he came back. During the time he was gone I had solved the puzzle and he got upset because I did it faster and better than him... Way to go there Adam. Btw this dude is taking a higer math level than I.... hrrm.