An Unexpected Summer

I didn't sleep well, but like I've mentioned, I don't really sleep in, so I was at least up early. Today, her dad was up too, a pot of coffee brewed already. He looked at me, speculatively. "Y'know, we could go hunting today."

"I, uh, let me see what Jessica has planned..." I trailed off noncommittally.

He grunted, obviously surmising that I had been warned off of the hunting. "Well, if you're looking for something to do, there's some firewood that needs splitting and an axe out back. Used to do it myself, but my back these days..." he shrugged, trailing off. "We usually hire a guy to come out and take care of it a couple times over the summer. You'd be doing us a favor."

That actually sounded like the

perfect

way to work off the frustration I was feeling. "I would love that."

I took my coffee out back and set to work. Thirty or forty yards behind the house was a large shed, with a wood-chopping setup.

It was perfect. Nothing but the morning sounds of the woods, a nigh-endless pile of firewood -- I wondered if her father was a bit of a prepper, there was so much of it -- and a sharp axe occupied my time for the next half hour. No distractions. No

Summer.

I put my back into the work. Letting out aggression felt great. As the morning warmed and I worked up a sweat, I took off my shirt. Not a big deal, I told myself -- we'd probably use the pool at some point anyway, her family was going to see me shirtless eventually. I kept working, feeling some of the accumulated tension melting away.

But a few minutes later I was interrupted.

"Wow, I get a

show

with my morning coffee."

Summer, of course, was wearing her usual loose-fitting tank top and skimpy shorts. She sipped her coffee, and I saw her eyes rove over my torso. I glanced down at myself. This was not really ideal -- I didn't want to be alone with her, let alone

shirtless

and alone...

"Uh, excuse me..." I looked around for my shirt...and realized it was right near her. She followed my gaze, and grabbed it, teasingly pulling it behind her back.

"Oh, no, please, don't let me interrupt you. Besides, I feel like we know each other pretty well now...or at least I know

you

pretty well..." the smirk on her face was incredibly smug.

"Yeah, a-about that...it can't...happen again." I tried to say it with confidence, finality.

She arched one brow, and folded her arms, looking skeptical, almost confused. "What do you mean?"

"We can't...you can't...what happened last night can't..." I trailed off. Her crossed arms had the effect of accentuating how large her breasts were.

A lot bigger than Jessica's.

The thought was unbidden in my mind. I pushed it away.

She nodded agreement. "Okay. I don't want to do anything you don't want to do."

"W-what? I didn't want..." I trailed off, again.

She rolled her eyes. "You could've gotten up and walked away whenever you wanted. Made up some excuse. But you didn't."

I felt myself redden. That was true, I thought, feeling a wave of guilt crash over me. "I-it was a mistake."

"Yeah? Weird, 'cause you seemed to like it..." she glanced around, though we were obviously alone; we'd see and hear anyone coming. But she leaned forward to whisper anyway, almost conspiratorially. "That big cock was

so

hard in my little hand. And I could tell you were jerking off in the bathroom, after. You were

so

turned on. Don't worry, I don't think Jessica realized, and I won't tell her. About any of this."

She paused, and then bit her lip. "Did you get to cum?"

"N-no..." The word came out almost automatically.

Fuck. Why had I told her that?

I tried to press on. "Anyway, I-I don't want to do that again."

She ignored the second sentence, and said, musingly, "

No?

But I know you didn't fuck Jessica last night, I'd have heard..." her eyes drifted to the pile of wood. "

Ah.

Working out some frustration, are we? Are you

sure

you don't want me to help?" She suggestively lifted up her tank top, showing off more and more skin, and as I stared, the bottom curve of two full breasts came into view, soft and round...

I reddened further and looked away. "Give me my shirt." The words came out weakly.

Her mouth quirked up. "Say

please

."

"Summer." I said her name, firmly, trying to put my best no-nonsense tone to it.

"Ooh, are you going to

make

me give it to you? I can be a little bratty, I know..." she pouted. "If I'm being a bad girl, you should probably

punish

me..."

I was fully hard, now. I really should've found a way to jerk off; the urge to just pick her up, bend her over the stump I had been chopping logs on, and fuck her into submission was absolutely overpowering.

And completely fucked up.

She was my girlfriend's kid sister.

So instead, I rolled my eyes. She had been right about last night. I could've walked away any time. And it was what I should do now. I strode past her, headed inside. "I'm gonna shower. See you later on."

She looked disappointed. "Okay," she called after me. "Just be careful, y'know. The walls are thin, and my dad's drinking coffee, so don't do anything in the shower you wouldn't want him to hear..."

The thin walls. I gritted my teeth. Maybe a

cold

shower.

I stayed in the shower until I could hear -- through the

fucking thin walls

, I thought, grimly -- Jessica stirring. I felt a little pathetic. I was basically hiding in here. But there was only so much that Summer could get away with with other people around.

Jessica was set on using the pool today. My heart sank, but I couldn't come up with an objection. It was not my favorite idea; the pool seemed like a perfect place for Summer to tease me. But I wanted to hang out with Jessica, I hoped it would curb Summer's behavior, and hell, she had already seen me shirtless. As long as Jessica was there, I thought it would probably be fine.

And there was a nagging voice in the back of my mind I couldn't get rid of, that repeatedly pointed out the obvious to me:

maybe Summer will wear a bikini.

The sight of the bottom curves of her full tits as she lifted up her shirt was etched into my memory. I could feel my cock stir just thinking about it.

But instead, she was...nowhere to be seen. She disappeared into her bedroom at some point during the morning, and we headed out to the side of the house to the pool without seeing her. It was just Jessica and me. And

that

framing in my own mind -- disappointed Summer wasn't here,

just

Jessica,

just

my girlfriend -- instantly made me feel guilty, too. I tried to throw myself into having fun with Jessica. But my heart just wasn't in it. I was tired, I hadn't slept well. And, if I was honest -- I was still thinking about Summer.

After splashing around a bit, we both lay down by the side of the pool. I was exhausted, the summer sun was warm, the outlying woods were quiet, and -- without Summer, lying next to Jessica -- I started to feel relaxed for a change. I slowly drifted off.

"Hey, I hope you don't mind, Jess, but I went in your room and borrowed one of your bikinis...I couldn't find mine, and this fits me okay!"

Summer.

I felt an automatic spike of anxiety and arousal.

Blearily, I opened my eyes, blinking in the bright sun. I had a bad case of what happens when you nap for an indeterminate length of time in the sun -- I felt slightly sunburned, slightly dehydrated, and

very

disoriented.

I heard Jessica's laugh from next to me. "Sure, no problem. Wow, you look great!"

"Thanks. Oh, um...can you...go talk to Mom and Dad? We just...well, we kinda had an argument about my grades. I feel okay but I think they're pissed."

Jessica let out a huff. "Summer, c'mon. At some point you've gotta just apologize, and tell them you'll try harder next year. But yeah, I will."

I felt a sense of panic. I was still waking up, getting my wits about me. I didn't want to be here alone. "Oh, uh...I'll...head back in too...think I'm getting sunburned..."

Jessica sighed. "I should actually probably do this without you, babe, in case there's, y'know, shouting. Why don't you stay here with Summer for a bit. I'll come back when I'm done talking with them."

"Thanks, sis. And I brought some sunscreen for you guys anyway!"

My eyes had finally adjusted.

Summer was standing in front of us, half turned away from me to look at her sister, gratitude on her face.

But admittedly, I wasn't looking at Summer's face.

She was wearing one of Jessica's swimsuits. I recognized it -- a purple two-piece, bikini top and thong bottoms. On Jessica, it provided a lot of coverage up top. Jessica looked elegant wearing it, classy. Like someone who vacationed on a yacht in Monaco, maybe.

On Summer, the effect was...well.

Slutty

. That's the simplest way to put it.

It fit her -- she was shorter than Jessica, so that helped -- but just barely. In the bikini, her big tits were practically spilling out of a top that was intended for a woman less-generously endowed. It pushed them up and together -- because there wasn't anywhere else for them to go -- creating a deep valley of cleavage.

And, with her body turned towards Jessica, I could see how the thong disappeared into Summer's full, round ass.

Fuck

. I couldn't take my eyes off her. I felt myself getting hard.

And then Jessica got up, said "Okay, wish me luck...back soon..." and left.

Left me. With Summer.

Who turned to me and gave me a once over, with a wry smile. "Do you want to hop in the pool to cool off? You look...

hot.

"

I sat up. I felt somehow vulnerable. "N-nah, I'm...good...just relaxing here..."

"Well, you're definitely getting sunburned, and I'm not going to follow in your footsteps. Will you do my back?" She held out the sunscreen peremptorily.

"I don't think...that would be...appropriate." My mouth was dry. It was hard to keep eye contact. I was rock hard, now, at the thought of touching her body, on display like this in a bikini.

"Oh? Why not? You're practically family. It's just my back. I told you, I don't want to do anything you don't want to do. But look, if you want, we can tell Jessica you just didn't feel comfortable putting sunscreen on me. I want to be here when you tell her

why

you didn't, though." She smirked. "What will you say? You think I'm really sexy and touching me would turn you on?"

I flushed, thinking that through. What

would

I say?

"I mean, I guess I get it. The last time you touched another woman who wasn't Jessica was what, high school? It's understandable that you would worry about controlling yourself..." She held up a finger as if she had a brilliant idea. "Oh! Maybe you can just tell her that I almost made you cum in your pants with a handjob and so you're trying to keep your distance?"

She giggled. I was bright red. For two reasons.

Obviously, I was so guilty thinking about last night. I shouldn't have let it get that so far.

But also...my pride was wounded by the way she was talking.

I

had stopped her before I'd cum. I had

been

in control. She had this view that Jessica and I were inexperienced. But I was older than her. Yeah, I hadn't slept around during college, but I wasn't some virgin who was afraid he'd blow his load just from touching a woman, like she was implying...

My pride won. "Fine. Sit down."

"Aw, thanks Jason...you're such a good guy..." She sat on the end of the lounger I was sitting up on, twisting back to hand me the tube of sunscreen.

It was no big deal, I told myself, trying to psych myself up.

But with her on the very end of the lounger, there wasn't room to sit next to her. Again, my pride won out. I wasn't going to do anything that implied I couldn't handle her. So I rotated and straddled her -- not touching, but one leg on either side of her.

I was in control. This was normal. I could be playful without it being sexual. "Say please," I said, grinning, as I squirted sunscreen into my hands.

Summer giggled, clearly ready for this. "

Ooh

, is that

all

for me?

Please, Jason

...I want you to really cover me..."

My

tone had been playful. Hers sounded like she was begging for my load, not sun protection. My cock twitched.

I pushed my arousal aside. I was just applying sunscreen. No big deal.

I started, gently, rubbing sunscreen over her upper back. Her skin was warm, smooth and enticing.

She let out a sigh. "Mmm. Your hands feel nice. Big.

Strong

. Do you give Jessica massages?"

God. Her sigh was absolutely sexual. I could feel my cock, straining against my swimsuit. But I was going to keep my cool. "Yeah, sometimes. This isn't a massage, though." I kept my voice nonchalant.

"I bet she likes that, those strong hands working her over...maybe you could massage

me

sometime. I mean, I already kind of massaged you..." She let out another little sigh of pleasure.

I didn't rise to the bait. Well, more than I already had, anyway. I just kept rubbing sunscreen in. "Eh, I don't think so. The massages are really for Jessica. But we can't have Jessica's

little sister

getting a sunburn."

I was doing a reasonably good job de-fanging her, I thought.

"Well, maybe I'll ask Jessica about it...anyway, you can rub harder...I'm not delicate, you won't

break

me..." As she spoke, she scooched backwards. I looked down, transfixed by the way the globes of her ass flared out from her tight waist, the thong traveling down.

She was only an inch or two from my erection, now.

I swallowed, hard, suddenly feeling a little lightheaded. The idea of pressing my length up against her ass was intoxicating. But I kept rubbing.

"Go lower," she whispered. "Really rub it in. I don't want to get a burn."

Mindlessly, I obeyed. My hands were on her low back, now, just above the top of her thong.

She let out a little moan and pushed back a little further. I felt her ass brush along my length. I let out a sharp intake of breath.

She giggled. "Oh my...Jason, is this getting you

excited

?"

I blinked. I hadn't...

relieved myself

...in days, and I had been teased what felt like

constantly

since then. I had gotten right to the edge of a climax several times in the last 24 hours. I was fighting a losing battle with my own arousal. I knew if we kept going, I wouldn't be able to stop.

Fortunately, I had proved my point, I felt. No need to push my luck. Time to call it. "It's just sunscreen, Summer. Anyway, I think your back is all set." I sounded confident. Nonchalant.

Good

, I thought.

"Okay," she purred. "Just let me do my front..."

She twisted around, kneeling in front of the edge of the lounger.

I stared down at her, between my legs. The position alone was suggestive. She looked up at me, a smirk on her face. "Do you think the bikini fits? I thought so, but now I'm worried it's a little small..." both of us looked down at her full tits, straining the bikini. She adjusted it, and I watched her tits wobble and shift, barely contained by the material of the bikini.

She picked up the sunscreen, squirting a large amount into her hands. "Oops," she giggled. "Sometimes it

comes out

faster than you'd expect. You know, like the guy in the movie last night..."

My face was red, I knew. I was aware that my mouth was probably open, that I should stand up and step away. But I was captivated as she started to rub sunscreen into her tits. I watched as she slid a hand into the valley of her cleavage, her tits beginning to glisten in the sun.

"It's really important to get sunscreen on my chest...maybe Jessica doesn't have this problem wearing this bikini, but for me..." she continued to massage her tits. I could see the peaks of her nipples through the fabric, now.

I have to admit, I'm not sure how long I watched her as she massaged sunscreen into her tits. It could've been forty-five seconds, it could've been five minutes. Hell, maybe it was an hour. I couldn't tear my gaze away. It was all I could do not to masturbate. I just sat there, watching.

Eventually, she looked up at me, a delighted expression on her face, "Well, all done...I think I still have too much on my hands, though...here..."

As she finished, I thought about how to de-escalate the situation. To thank her, maybe to tell her she needed to get sunscreen on my back, use the opportunity to get her out from between my legs.

But then she reached out and wiped her hands on me, running them along my sides, just above my waistband.

I was helplessly aroused. The sensation - her slick hands on my hips, warm from the sun, sliding around to my stomach - was hot as hell. Instead of de-escalating things, with a surge of absolute shame, I bucked my hips helplessly a little at her touch.

Fuck

.

She let out a soft gasp, fingers still lingering around my hips and stomach. "

Oh

...still haven't gotten any relief, huh?" She bit her lip, faux-sympathy in her voice, looking at my swimsuit. There was a wet spot, near the tip of my thick length, where I had obviously been leaking precum. And my length was clearly outlined.

I didn't answer.

What was I going to say?

That she was right?

She continued talking, quietly. Her hands were toying with my waistband, now. "You know, my

tits

are basically out anyway. And I love putting

big cocks

between them. I've got lots of practice...I could

get you off

. It wouldn't take long."

There was something about her dispensing with pretense, the vulgar language, that got me even more turned on. I stayed silent. I didn't trust myself to speak.

"

Jessica

probably doesn't do this sort of thing, not really her style..." she mused. As she spoke, she undid the tie on my waistband.

I felt paralyzed, torn. The guilt made me want to push her away. The overpowering need I was feeling made me want to pick her up and put her on top of my cock. Frozen, I did neither.

She didn't wait for an answer. She smoothly pulled my waistband out and down over my cock, biting her lip and staring at it. I was rock hard, her face inches from my cock. My length twitched as she revealed it, and more precum beaded on the tip.

"

Wow

..." she sounded a little breathless. "Well...let me take care of you, since

Jessica isn't doing it...

"

I flushed with guilt again at her mention of Jessica, but that was gone in a heartbeat as she leaned forward, pushing her breasts together with her hands, and nestled my cock between her tits.

I moaned. Her tits were incredible. Slick with the sunscreen, warm, full and soft around my length.

And they were big enough that my cock almost disappeared entirely. Only the thick head of my cock jutted out, almost jabbing her in the chin as she looked up at me, smug.

"Ever done this before, Jason? Had your cock between a nice pair of tits like this?"

I shook my head, helplessly. She was right. Jessica

didn't

do this sort of thing. Makeout sessions in high school didn't involve titfucking. I had never done this before.

"Well..." she giggled. "Why don't I show you some of what you missed out on in college..."

Slowly, maintaining eye contact, she slid her breasts smoothly up my length, and back down again.

God.

Even with just that one stroke, I could tell I wasn't going to last long. Soft, warm skin sheathed my cock, and the situation --

my girlfriend's little sister,

titfucking me -- was just so hot. Beyond that, I had been teased to the verge of cumming for two days.

She seemed to read my mind. "It's okay if you cum really fast...lots of guys do, their

first time

..." Her tone was mocking, and she maintained the same slow, smooth, pace.