A learning boy

Well, this is the first time I've ever spoken about these things, things that happened in my youth, the things that formed me into who I am now.
I'm in my thirties now, living the life expected from me, a marriage, a parenthood, a job and seriousness. And somehow, I managed, in all that boredom, to secure my inner pleasures, hidden from the eyes of others.
Until now.
When I was just a teenager, in my puberty, I had no idea that some of my favourite fantasies will come from my older cousin. He was in his mid twenties, athletic, with the ugliest face possible, but charming and funny. He once paid us a visit and after usual hellos and "what your folks are doin' " questions from my parents, we were left alone in our living room. He lied down on our sofa, wearing his t-shirt and tight jeans, and me only in my shorts, sat at the edge of the sofa, enjoying the warmth of July, expecting to hear funny stories he usually talked to us.
I noticed a huge bulge hidden in his oh so tight jeans, a thick line stretching almost to the top of his trousers. He spotted my glance and all of a sudden he asked:
- Do you wanna see it?
- What?
- You know, this...
...and he pointed with his eyes to his crotch.
- Oh, that... - I replied a bit surprised - Wll, why not...
He slowly raised unzipped his jeans and a magnificent, hard cock was presented to me, shining in his thin skin and veins that followed its line towards the red head, emerged from his foreskin.
I must have had my eyes widen and sparkling, he noticed it, enjoying this hot, little conspiracy.
- Do you wanna touch it?
- Mhm, yes, please...
I moved my hand and softly touched it with my fingers, feeling tha warmth and the pulsation of his aroused meat. He sighed a bit, closed his eyes, put his palm across my hand and make me hold it. My hand seemed small and innocent while holding his beautiful cock.
- Move your hand up and down across it, like you do with your cock, love, make me enjoy it more, please...
I did as told, all that time feeling tirmoil in my own crotch, my own cock wanted to explode in my shorts.
At that moment, we heard my parents coming back from the garden and we knew our little play was over.
For now.