Go down on him

You don't sleep for long, but you feel a lot better when you wake up. John wakes up about the same time you do. He's lying beside you, his body warm and naked. Right away, you're horny, and John kisses you in a way that tells you he's ready to go again. Through the blanket, his thigh presses against your crotch.
"Uh, would it be weird if I put underwear on?" you ask. You're still not entirely sure how you feel about having your micropenis fully out, and you feel like you'd be more comfortable having it hidden away.
"Not at all," John says. You get up and quickly put on a pair of boxer briefs from your dresser. John watches you, smiling.
"What?" you ask.
"Nothing, you're just hot," he replies. You grin as you get back on the bed. John moves against you, and you reach down to his pussy and feel how wet he is. As you do this, you realise something and freeze.
"Wait, did you cum when I ate you out earlier?" you ask.
"Nah, I got close and then I suggested you try fucking me," he says.
"And you didn't cum when-"
"When you were in me for all of twenty seconds? Uh, no."
"So you didn't get to cum at all? Holy shit, I'm such an asshole," you say, blushing, "Sorry for that."
"It's fine," John laughs, "You can make it up to me."

You finger his clit as the two of you make out. You try to keep your crotch away from him, wanting to try and focus on him and to not get distracted. You move down his body, kissing all the way until your mouth reaches his pussy. John moans as you suck his clit, and again you feel a sense of accomplishment knowing that you're doing it right. Like last time, John gently directs you, but you notice that you seem to be doing better than you did the first time you went down on him. You devote all your attention to his pleasure, sparing no thought for your own dick, which throbs untouched in your underpants.
"Fuck, yes, just like that!" he gasps after a while, "Don't stop, I'm gonna cum!"
His legs go tense, and you feel him grasp at your hair as his t-cock throbs and spasms against your tongue. You moan, his clit still in your mouth. The sheer arousal you experience from making him cum almost sends you over the edge too, the way it did when you fingered him earlier, but you manage to control yourself.
"That was good," John pants, "you're a fast learner."

You sit up, putting the large wet spot of precum you've drooled into your underwear on full display.
"Looks like you liked it too," John notes, "Is that all precum?"
"Yep," you say proudly, kissing him, "I almost lost it when you came, but I managed to hold back."
"Well, there's a first time for everything," he says playfully, kissing you back, "So, I take it you're ready to blow at any moment?"
"Nah," you say jokingly as you both lie down on the bed facing each other, "I'm not a virgin anymore, remember? You can't make me cum in my briefs with just a little grinding."
"Oh yeah?" John raises an eyebrow, "not even if I do... this?"
He grabs your chest and you feel his fingers manipulating both of your nipples. You gasp, first in surprise and then in pleasure. He kisses you deeply and you can feel the grin on his lips as you whimper. You reach the point of no return and reach down to your crotch, but John swats your hand away, leaving your cock to leak cum, untouched, into your boxer briefs. You groan as your orgasm subsides.
"I win," John says gleefully. You smile and press your face against his chest.
"You win," you agree.
"You have pretty sensitive nipples, huh?" he asks, "I mean, the first time you came in your pants on the couch was right after I touched your nipples, too."
"I guess?" you say, "I've never really touched them before."
"We should experiment. I want to find out just how sensitive they are," he says, "There are so many things I want to do with you."

You feel the same way, but right now...
"I think I still need to cum," you admit, "I think I only came a bit, like it wasn't a full orgasm or something."
"That's what you get for leaving me in the lurch earlier," he teases, but he presses his body against you so that his thigh is against your crotch. You do the same, your bodies locking together so that you're each rubbing against the other's thigh. John moans. You can feel his wet pussy gliding against your leg, his engorged clit hard. He grinds his crotch against you fast and forcefully, the movement of his thigh helping stimulate you as you grind. You gasp and moan, burying your face in his neck. John's legs shudder as he cries out in pleasure, pressing flush against you. Your orgasm hits you just as his does, and the two of you hold each other tight, panting as you both cum.

You detach from John and lie back on the bed. Your boxer briefs are well and truly drenched in cum now, and there's a fair amount still clinging to John's thigh. John runs his finger across his thigh.
"Are you aware that you cum, like, a lot?" he asks.
"I guess," you say, "I mean, it doesn't take that much to make me cum, as you've seen."
"I'm not talking about frequency, I mean the actual amount of cum," he says, "You have the biggest loads of anyone I've ever slept with."
"Really?" you ask, surprised. You'd never really stopped to consider how the amount of cum you produced compared to other people.
"Yeah. It's really hot. Especially since you cum so easily," he says admiringly, "I mean, you'd already cum two and a half times today, and you still managed to totally soak your underwear after a minute of grinding. That's crazy. You're like a machine."
"I'm like a superhero, but my superpower is premature ejaculation," you say sarcastically.
"You jest, but that's exactly how hot I find it," he says with a laugh, "and anyway, that last time wasn't premature, it was just fast. You came at the exact same time I did."
"Well, maybe you came prematurely, too," you grin, "maybe it's contagious."
"Maybe," he laughs, "Anyway, we should definitely get cleaned up. Do you wanna shower first, or should I?"