After I graduated from high school, ran around for a year or so, was almost 19 when I came back home and got a job working for a company at night, little to my surprise my companion for the job was also a high school friend, so it made it easy fitting into the job.
We chatted about how things had been going since were graduated and were just about the same in our love lives. One shift I came into our office and my friend, we will call him Junior, wasn't around so I started working when I heard some noise in an adjoining room. As I went to investigate, there was Junior masturbating, he had a nice little 5" cock but he was going to town on it, so I watched, when I heard his breathing speed up I watched as he came and shot a spurt halfway acrossed the room along with a couple other large amounts, I was surprised that much cum came from such a small guy.
I quietly left watching and made my presence known so he wouldn't know I had been watching. When he came into our work area, he sort of smiled at me and I was trying to hide that I had a hard on. Over the next couple of days Junior would bump into my hand with his crotch and several other things, and I got the feeling he was coming on to me.
One day he said, did you enjoy watching me the other day, I was surprised but said yes, he asked if I jacked off and I said yes, a lot. He told me we could go in the other room and do a mutual JO, I thought why not, since we were the only ones in the building. I have always considered myself a bisexual, so this did not bother me at all.
We rolled into the room and he immediately dropped his pants and showed his nice cock, already hard and ready to roll, I dropped my pants and got my 6" uncut, fairly thick cock out and it started to immediately get hard. We stroked for a while when he reached over a grabbed my hand and put it on his cock, I stroked it and he returned the favor.