I have always been a cross dresser since a young age. My wife knew nothing about this until I told her 4 years after we were married. I dressed in panties only but some times put garters and stockings on. As time went on my wife bought some items of female clothing for me. I had never sucked a cock and never thought of doing it. One night we were out in the city and went to an adult book store. We both went into a booth together and while watching a show a cock came threw the hole in the wall. My wife smiled and took hold of it jacking it slowly. I told her to suck it and she said no you suck it. I said no way, she said in a stern voice "you better if you know what's good for you". I leaned over and she pushed my head on to his cock. I sucked it until he was ready to climax and was told to eat every drop by my wife. I kept sucking him until he shot cum in my mouth. After licking his cock clean my wife asked if I liked it. I told her it was okay and then another cock poked threw the hole. I looked at my wife and she nodded for me to suck it, so I did and ate all his cum also. We left and the wife told me that I will be a cocksucker for life now. I asked what she meant and she told me that I have to suck cocks as she watches. Threw the years I have sucked many cocks and still do. We do still have sex but she has many lovers who she has sex with and I suck their cocks for her.