First Time Giving Bj

My gf of 2yrs and I were renting an apt together. I have a fascination with cum and always wanted to taste a strangers cum. My gf was working an evening shift the first time I had the nerve to post an ad on Craigslist for a No Strings BJ. I was 32 at the time. A guy around 50 ended up on her couch and made me work out his load, sucking for almost an hour. I get aroused remembering that experience.