Act out Ron's dream.

"Alright", you reply to Ron.

"Thanks!" Ron says, the gratitude in his voice obvious to here. "I wasn't sure if you'd agree."

"Anything help my best friend", you tell Ron. "Now, tell me more about the other person in your dream. Not Trelawney. There's nothing I want to know about her."

Both of you shudder.

"Tell me about the guy in the crystal", you continue.

Ron mumbles something.

"Sorry, I didn't catch that", you say.

"I said, he had a nice cock", Ron repeats quietly.

"What? Like this", you respond, reaching down to grip your own cock briefly.

Ron's eyes follow your movement, and stay staring at your cock.

"I guess", he mutters.

"Come on, Ron", you say. "I'm helping you out."

You reached out and grip Ron's cock in your hand. Under your touch, his cock jumps and begins to harden. Ron looks around the room furtively, but no one is within eyesight, though the steam from the showers would be enough muffle sight and sound. Nonetheless, Ron doesn't pull away from you. You begin to stroke Ron's hardening cock, and soon, Ron returns the favour.

When you're both hard, you let your hands drop to your sides. Ron does the same, and looks at you apprehensively.

"Do you want to feel filled?" you ask as Ron just stares at you. "Do you want your dream to come true?"

When Ron still doesn't answer, you snap your fingers in front of his face. Ron blinks a few times, the straightens up.

"At least then I can tell Trelawney that at least one thing that I've foreseen comes true", Ron says to you.

For a moment, Ron pauses again, and you can see he's thinking.

"Harry", Ron begins, anxiously. "What do I do? I have no idea!"

You smile at Ron, and place a hand on his shoulder. Not long ago, you would have been in the same position, but a few secret trysts with a Ravenclaw have given you some foresight into sex. While you haven't exactly had sex with another guy, you know approximately how it works, and, anyway, how different could it be from sex with a girl?

"Just follow my lead", you tell your best friend.

You lead Ron over to a nearby bench, and get his to lie down on his stomach, his legs off the bench. This leaves his arse sticking up in the air – a perfect access point to you. You grab your wand from your clothes, and tap your hand with it. Your fingers are instantly covered with a cool gel. It's a useful spell you've learnt, with more applications than Professor Flitwick would have ever though possible.

"Relax", you tell Ron, as you place a finger on his arse.

Instinctively, Ron tenses up, but at he gets used to your finger rubbing up and down his crack, you can feel his relax. When you decide that Ron is calmer, and his muscles have unclenched, you put your finger at Ron's entrance, and slowly push your way inside him. Ron lets out a low moan of pleasure, letting you know that you're doing the right thing.

While Ron is eager for this to happen, he is still quite tight, and in order for him to be filled as in his dream, he needs to be a lot looser. The first time you try, you can only get your finger into Ron up to your first knuckle. Not a bad first attempt, but nowhere near enough. The second time you try, you push your finger a fraction deeper.

"You need to help me, Ron", you say in frustration. "Your too tight!"

Ron relaxes his arse muscles further, making it easier for you to penetrate him. Soon, you're up to the second knuckle. You decide that Ron is up to the next step, and place a second finger next to the first. Slowly, you press into Ron, stretching is arse muscles further than they have ever been stretched before. When you're able to push both fingers up to the second knuckle, you push them apart, stretching Ron's hole further, and drawing a long moan from the redhead. Then you add a third finger and repeat the process.

When you're satisfied Ron is stretched as open as he can be, you remove your fingers. Ron's hole twitches at the absence of anything inside it. Ron glances over his shoulder, and sees you lining up your cock with his hole.

"Will it fit?" he asks, anxiously.

"I think so", you answer. "I'll go slowly anyway, and you tell me if it hurts too much.

Ron nods.

You place your cock at your friends hole, and then slowly push it in. Ron lets out a loud shout, and you thank your luck that the bathroom had been left empty apart for you for some time. Very slowly, while constantly checking Ron, you push your cock in, so that it's half way into Ron. Then you pull it out again, until only the head remains inside. Each time you slide your cock into Ron, his arse loosens a fraction, and you can push in a bit deeper. Soon, you're cock is all the way inside Ron.

"How does it feel?" you ask Ron.

"It feels fucking great!" Ron responds, panting from the exertion.

You pull out, and shift your position slightly before you push in again. This time, Ron gasps loudly as you push in.

"What was that?" he gasps. "I felt like stars were bursting behind my eyes!"

"I think that's your prostate", you explain. "It's got a bunch of nerves that are meant to feel great."

Ron twists around to look at you. His eyes are open wide, his hair is wild, and his face is covered by a sheen of sweat.

"I want to look at you while you fuck me", he says.

You pull fully out of Ron, and he flips into his back, and raises his legs into the air you grab one leg with one hand, and your cock with the other, as you direct it to Ron's loosened hole. You shove your cock into Ron, eliciting a moan from him. With each thrust, it becomes easier and easier to move in and out, and your pace picks out. Soon, you're fucking Ron in a fast pace, leaning forwards to balance yourself on your friend's body, as Ron's legs are pinioned between his body and yours.

Suddenly, you thrust in, and hold your cock in place. You shudder as you cum deep inside Ron. Ron feels your warm cum inside him, and cums himself, without touching his cock. His cum pools on his chest. You lean forwards, and take Ron's mouth with yours in a deep kiss. When you pull back, Ron is panting.

"I feel so full", he says.

"Don't worry", you reassure him. "You can have this opportunity again."