My friend Sam

[All the characters are of legal age]

I had a childhood friend Sam. One day while gossiping, topic of porn came up. Weirdly and awkwardly, we discovered we both watch it. Then we started discussing about porn. What stuff do you like, what do you get off too.
Then a thought crossed our minds, why not....watch it together?
We both were teens with raging hormones, and the idea of not jerking off alone seemed very exciting.
Next day we found ourselves in Sam's room, lying back on his bed and some hot milf porn playing on his phone.
I was rock hard, and I could see he was too.
This was very exciting for me, so I just unzipped my pants, took out my dick and started stroking. Sam followed my lead.
I don't know what came in my mind, but I reached out and grabbed his dick. He let out a small moan as I slowly started to stroke him.
He started stroking me as well.
I think he was enjoying this a little too more. When I left his dick to change the video, he grabbed my hand and placed my hand on his dick instantly. He was loving it. The expression on his face with my each stroke was a sight to devour.
I increased my speed and grip on his dick as I felt him nearing his orgasm.
I cupped his balls from my other hand and the moment it touch his balls, he erupted like a volcano.
He came all over my hands and his thighs.
And I don't know why, but I fucking loved it.

This became a thing and went on for a few years until we drifted apart.
And this is how my obsession with dicks started. Obsession to stroke a guy hard, see him moan, his dick twitching in my hands and his balls squeezing as he cums.