An emotional rollercoaster

Note: I kind of lost track of what I was writing towards the end. It just happened 😅
Be warned that this fic is quite mature. Don't read if you don't like stuff like that.
Sorry for any mistakes. English is not my first language. It might sound weird at some points.
If that doesn't put you off, I hope you enjoy reading :)

We've got a big sofa at home. It's big enough for me and Dec to lie next to each other with only our shoulders brushing. But every time we have a nap together, we always end up wrapped around each other. Either chest to chest with Dec's head buried in my neck or with me spooning him from behind, my hand on his stomach.

This time I wake up spooning my best friend. Dec is still asleep. I smile and tighten my hold on him, gently nuzzling his neck. Dec moans softly and squirms in my arms. I lift my head and search his face for any sign of discomfort. Maybe he's having a nightmare. His face doesn't confirm my guess. I know what he looks like when he's having a bad dream and it's definitely not like this. My next guess is that he needs a wee so I move my hand down to his lower abdomen. The area is all soft so it's  definitely not his bladder bothering him.
Dec moans yet again and I'm thinking of what else could be bothering him when my gaze falls on his crotch. Even through his quite loose sweatpants I can see the growing bulge between his legs. My best friend is aroused.
Something about that lets my heartbeat quicken. The hand that is still resting on his lower abdomen is itching to go even lower. I want to touch him, feel him.
Before anything happens my brain steps in. *"He's your best friend. What's wrong with you? Don't do it."*

Yet my hand seems to have a will of his own and slowly makes it's way down, even though my brain is screaming at it to stop.

Soon my palm is resting right over my best friends crotch. I don't even have to do anything to feel the outline of his semi hard member, pushing against the thick material of his sweatpants. Now my heart is definitely pounding. My movements are controlled, I don't want him to wake up. And even if  he does wake up I want to be able to say that it was an accident and that I didn't touch him on purpose.

Carefully I let my fingers run over his lenght, exploring him. I feel him twitching under my touch and he moans softly.
Intrigued by his reaction I get a bit more confident. I cover his bulge with my palm and start stroking him. I keep the pressure light, apparently too light for Dec as he starts pushing his crotch into  my hand.
I feel my own member start to tingle as I watch my best friend reacting to my touch. Dec seems to enjoy it. He's probably having a very naughty dream.
I keep on caressing him, feeling him grow harder under my hand. I switch from stroking to kneading his now rock hard member. Dec groans loudly. The sound goes straight to my own member which is already half hard and straining in my pants.
I tear my gaze away from his lower half and watch his face. Dec is breathing through his mouth, his breath coming in short bursts. He's flushed and sweaty, but he doesn't look uncomfortable. He looks quite blissed to be honest. For an experiment my hand leaves his crotch. Dec's reaction is abrupt. He starts whining in his sleep and he's rocking his  hips, looking for some kind of friction. I put my hand back on his crotch and the whining stops almost immediately. I can't help smiling.
Now braver than ever I let my hand slide into his sweatpants, gently cupping him. I can't help moaning as I feel the damp material of his pants against my hand. They're thin enough for me to feel  the warmth radiating from his skin. I pull them down slightly and take hold of his dick. It's slightly smaller than my own, but that doesn't matter. It fits perfectly into my hand. Slowly I start pumping him, letting his foreskin glide up and down over his tip. Dec groans and rocks his hips in time with my movements. I gather the steadily leaking  precum from his tip and use it as lubrication. I have to tighten my hold on him, because it gets more slippery by the second. Dec's rocking gets more intense and his rapid breathing is more than audible in the otherwise silent room.
I try to keep as silent as possible, but it proves to be quite difficult as Dec keeps on bumping into my own crotch. By now I'm just as hard as my best friend and the urge to touch myself gets stronger with every second.
I still can't believe what I'm doing to my best friend and I'll probably regret it as soon as it's over, but for now I want to finish what I have started. Dec seems to be quite close now, judging by the desperate noises he is making.
I think about what I'm going to do when he climaxes. Should I aim him over the edge of the sofa? It would be quite difficult to explain the stains on the carpet. Better not then. The other option is to just let him cum into his pants. That would be quite messy, but Dec would probably think that he had a wet dream and get up to have a shower. That would give me the chance to have a long wank in the downstairs toilet. I definitely need one. I decide that the second option has more advantages. I pull his pants back up and continue stroking him. Even through the fabric I can easily locate his balls. I squeeze them gently, feeling how tight they are. Dec is right on the edge of a powerful climax. I caress him for a few more seconds, feeling as he begins to tremble under my touch. A desperate moan erupts from his mouth and he arches his back. My hand moves back up in a swift motion. Grabbing him, my thumb circles his tip. Dec gasps and his member twitches as he climaxes.