How can i not forgive him for being late for work on his knees and with my cock in his mouth?

I work in a workshop with one of my best friends. he is a crazy twenty-something who is late to work almost every day and takes everything as if it were a joke. we have the workshop full and many cars to deliver. i don't know how i can stand him or maybe it's because i love having him around and noticing how hard my cock gets every time i see him. i try to ask him for explanations but his fooling around only makes me lose control and end up with the monkey down and him on his knees licking my cock.