First time engaging in homosexual behavior

In the summer we went to the matinee on Saturday.  It was a bunch of kids and we ate popcorn and drank sodas. The movies were all PG rated and the whole thing was to get into some air conditioning. It was an old theatre, built in the thirties. The bathrooms were down in the basement. That Saturday I went down in the middle of the movie.  A man I ran into down there asked me if I was looking for the bathroom.  I said yes and he grabbed me by the arm and said he had a better one, and took me into the office and behind the office was a bathroom. He stepped in with me and asked me to pee, he wanted to see me pee. He got behind me and held my dick to pee. He offered to show me a man's dick, and took my hand to hold it. We stood there, he had my dick in his hand and I had his dick in my hand.  He asked if I liked that. With that he kissed me and told me sit on the toilet and had me suck his dick for him.  He got hard and my hand was just big enough to hold it, when he came he wiped his dick all over my face.  He then sucked me and using his finger to finger my ass and got me to cum too.  With my face still covered with his cum, he kissed me and told me I was a good boy and I needed to come see him more often.

My first was all the way with me as the bottom. I was in 4th grade and he was in high-school.