Younger guy

I'm a 37 yo doctor working at my local gp center and been having s** with one of my patients,he came to see me when he was 18 claiming to have a problem with his manhood, every month he would come in and i could find nothing wrong with it,then it became once a week i would ask him to drop his pants and soon as i touched his d*** he would get an erection,it wasn't hard to work out he was just doing it for his own pleasure,he was getting his fun so i wanted mine started to booked him in in my lunch break to have more time,one time i cupped his b**** and asked him if he could have me what would he do straight away said i would f*** you over that desk,so i go to the desk bends over and tells him to do it,he looked puzzled by it so i pulled my knee length skirt up to show him I wasn't joking, every thrust made my desk wobble,we been f****** in my office for a year now.