Discovering My True Self

On holiday at the start of April with two older friends, I witnessed them both fucking a girl they'd invited back to our room.
When the oldest, Sam, saw me watching them, he invited me to join them.
I declined, not because I didn't want to have sex, but because my cock only measures around four inches when erect. And even in the half light of our apartment room, I could tell both of my friends had big cocks.
After another few minutes, Sam withdrew from the girls arsehole, got off the bed and walked over to my bed.
Shoving his cock in my face, he told me to suck his dick, saying "If you don't want to fuck her, then you're going to suck me".
I knew I didn't want to show him my erection, so I opened my mouth and let Sam slide his cock over my tongue.
It was my first ever time interacting sexually with a male, yet the more I sucked on his cock, the more he moaned, which in turn made me enjoy the experience.
Even with the taste of the girls anal juices on his cock, I literally devoured his full length, gaining more and more confidence as Sam began thrusting into my mouth.
Our other friend was too involved in a sixty nine with the girl to notice anything, so when Sam mentioned we should go onto the balcony, I just got up and followed him.
Kneeling in front of Sam, I began sucking his cock again, until he practically ordered me to drop my boxers. Standing me up so I was leaning onto the balcony rail facing the pool below, my friend, someone I'd known for eight years, slowly entered my arsehole from behind.
It was painful at first, yet even under the pain I could feel pleasure and listening to Sam talking in my ear about always wanting to fuck me, I relaxed and the pleasure sensations up my rear only got more and more intense.
Eventually Sam was fucking me full on, slamming his cock up my arsehole, and at the same time reacting around me to stroke my small dick.
When he first gripped my erection, he didn't make fun of it at all. Instead my friend said "It's beautiful".
That one comment had me backing onto his cock, forcing it and myself to take Sams cock as deep as it would enter my body. And only a minute or so of me matching his rhythm, I heard Sam cry out as his cock erupted up my rear hole.
His hot cum entering me, had my dick pulsing and I came myself without having touched my cock once.
Turning me around after pulling out of me, Sam kissed my mouth like he would any girl, and in that one kiss I knew I'd want him again.
We sat on the balcony naked talking about our feelings and Sam letting me know he'd fucked other guys, but had always wanted us to get together. But he'd been unsure if I'd ever be into gay sex.
Well over the next four days we spent on the island, Sam fucked me several more times, even fucking me in front of our other friend, who frankly couldn't have cared less.
Since returning from our holiday, myself and Sam have begun having sex pretty much every day. Some days I'll visit his flat, but I actually prefer having sex with Sam outdoors or in his car. And it's especially a turn on if we're being watched, as we were two weeks.
Sam was fucking me as I held onto a tree. We were at a place near a well known peak district cliff. Sam had been fucking me for a couple of minutes when an older man walked up with his cock out.
It was such a turn on seeing him wanking as Sam thrust into me. Needless to say it had the desired effect and I came so hard my whole body shook, making Sam cum deep inside of me.
The man shot his load over the ground and quickly walked off. We both said how horny it was, with Sam adding he'd love to have another guy join us.
That hasn't happened yet, but I think it'd be amazing to be fucked by an older man.