All characters engaging in sex are of legal age.
*****
The next day was the strangest of my life. My younger sister and I had started an erotic game but today we went on a family outing -- mum, dad, me, Cassie, aunt Alice and our three cousins. Eight people, the youngest being Sarah at fourteen, all crammed into our minivan. Cassie was masterful. How she managed to act as if nothing had happened I'll never know. She chatted, helped our cousins choose souvenirs, did mum's hair, giggled when dad tickled her... All I could do was run through events in my mind. Incest. I'd
penetrated
my sister and that made it incest. I wrestled with conflicting agonies. On one hand Cassie was my sister and what happened should be faced up to, then we should move on. But on the other hand, I could not stop the growing desire I had for my gorgeous little sister. And her being 'normal' all day made it unbearable.
I told her so that evening after dinner. She yelled to mum that we were going for a walk on the beach. As soon s we were out of sight she turned and faced me and pulled me into nearby tall scrub.
"You trust me Mikey?"
"Of course."
"OK. I trust you too. With everything. But I'm worried. You've looked like a sad puppy all day. What gives?"
"Honestly? I'm scared."
"Huh? Scared of what?"
"I'm scared of what we did. Of what we might do. Of being found out. I'm scared of
myself.
"
"I don't understand. At least not all of it."
"Jesus Cassie, I love you like a sister. But I
desire
you like a lover. Understand now?"
"Oh OK. Yes. Let me get this straight. You said we can't go all the way. Still feel like that?"
"Yes! We can't. I want to, but I don't want to! You can't
un
fuck your sister, know what I mean?"
"Ssshhh! Oh it's alright, I thought I heard someone. Let's go on the beach where we can see if anybody's near."
We walked the track to the beach in silence. Strolling along the beach, it was she who broke the silence. "I get it. Really I do. I think I want you, um,
that way
too. But I think we can both control ourselves. I mean, if you want to, y'know, fool around some more. Do you?"
"That's the point. It's all I can bloody think about! Cassie, I wanked
twice
last night dreaming of your body."
"Oh wow! I'm flattered. Did you really?"
"Yes. That's what worries me. What only started as a game two days ago has become like an obsession. Oh fuck. It's too much. We gotta cool off."
I could see the sadness in Cassie's eyes, but she nodded. "Yeah. OK. It was really fun, but it's over, right?"
"Right."
She held my arm like a sister as we walked back. I went to bed early and slept fitfully.
For almost a week we fell back into a 'normal' bro-sis relationship. I even tickled her a bit and we hugged chastely. At the beach I managed to mostly ignore her body, even now that I knew how it looked, how it
felt.
Of course I didn't just switch off to what had happened, far from it. I developed a catalogue of fantasies about my sister to masturbate over. Sometimes I just relived reality, other times I built on it, like for example remembering when Cassie had pulled her crotch aside to show me her pussy, I dreamed she masturbated for me too. And when I relived when she wanked me off, I fantasised she'd let me blow on her tits.
One evening mum and dad went out for a date. Cassie and I got beer and pizza and watched a movie in the darkened loungeroom. There was a scene in the film with a slim, attractive girl stripping to arouse her boyfriend. When the actress was butt naked, I said: "Jeez, all that fur! I bet it's fake -- to cover her real 'bits' I mean."
Cassie laughed. "You like 'em hairy bro?"
"No, I like 'em like... Oh."
She knew I was going to say 'like yours' but we let it pass.
Later in the movie the same actress was naked again, and I got a little wood. Cassie said: "She's got good tits though, right?"
"Yeah, they're good. I don't like them too big. Any more than a handful and a mouthful is a waste!"
"Haha."
The scene went on. Cassie sipped her beer, then said: "Mine too small then?"