The first time with my step brother

I was about 15, maybe 16 years old. (26 now) I was in the band in High School, but was also on the track team. I was not a runner. I threw the shot put. I worked out alot so I was not a small guy, but I also did not have a ripped body either. At the time this first happend I was about 5’6″ and weighed about 180lbs. I have blonde hair and blue eyes. My cock is a modest 6 or 6.5 inches. About 3 inches around.
Josh, my step-brother is about 5 years older than me. He was the jock. He played football from the time he could hold a ball until he graduated from college. He played college ball at a small school in rual Virginia for 5 years. We was 6 foot plus, weighed well over 225, maybe more. He also had blonde hair and blue eyes, but his cock had to be 8 inches long and at least 4 inches around.
Now that we have the basic descriptions out of the way, lets get into how we became “lovers.”

Since my parents were divorced, my dad had always had visitation every other weekend. He had come to pick me up one Friday evening after work. I lived about an hour and a half away so it was late when we got back to his house (where my step-brother lived when he was not at school.)
Footbally was over for the season so Josh was there at the house waiting on me. We always hung out, went cruising for chicks, played Nintendo or playstaion. After the same old “Hey hows it going?” and “What have you been into..” We settled down to watch some TV or play some video games.
It did not take long to notice that he was sitting under a blanket, but I thought nothing of it.
When he was sure that I was settled, he grabbed the remote and pressed play on the VCR. Now we had watched plent y of porn together as my dad and step-mom (his mom) subscribed to Playboy TV and had a massive porn collection.
The movie that came up on the screen I had seen and had jerked off to many times before, but since it was a She-Male movie, I did not let on that I was into that. By this point in my life, I had “expirimented” with 3 other guys so I was turned on by these trannies fucking.
I noticed that as the movie played on, Josh seemed to be playing with his dick under the blanket. ( I was doing the same.)
Finally I got up the courage and started a conversation with him about the movie.