My Sister and Her Fuckable BF
Copyright© 2026 by Daydreamz
Chapter 3
Coming of Age Sex Story: Chapter 3 - My mysteriously virgin older sister and boyfriend have to be rescued - from being oneupped by me and my gf now that we've got ourselves laid: see Stunning Girls Run in the Woods! (As before it's narrated by our hyperactive teen girl, so don't skim it!)
Caution: This Coming of Age Sex Story contains strong sexual content, including mt/ft mt/Fa ft/ft Teenagers Consensual Lesbian BiSexual Heterosexual Fiction Sharing
“How is anyone supposed to match THAT?” Cath pointed a jokey finger at me.
I was pretty sure she was going to do it better, if anything, but I grinned back. “Wait till you feel it inside,” I smirked, “you’ll just react.”
Rob was looking at Cath, checking that she really was alright with it, and grinning too when he saw that she was.
“As conspiracies go,” he looked at Tills as well, “that was as good as it gets.” He laughed and rolled off me, facing the door. Understanding he’d been ganged up on. I supposed Cath had been knowing all along too, and helped set it up even.
They came in and I was giggling too, looking up at them still together. Well if they were going to keep lezzing, I could keep fucking Rob couldn’t I?
The best thing would’ve been for them to get into bed with us, but my bed is a single.
So I got up and Rob did too, and we hugged all four together. We all wanted everything to be cool, and it was - we were hugging and kissing to be making completely sure, and also cos it felt nice. I was between Tills and Rob, so Cath was opposite, also between Rob and Tills.
What next? It’d be too boring to just get dressed. I looked at Cath, who’d be thinking Rob needed some recovery time. Mum and Dad might be home soon, too. They are cool as I said, but us doing a four-way while they were downstairs was asking a bit much. But one thing we all knew was we wanted to carry on together.
“Let’s go somewhere.” Tilly was wanting her fuck too of course, and therefore wanting a plan with double recovery time for our man.
I stroked her ass while I tried to think of somewhere. There weren’t any parents’ houses where we could do it obviously. We absolutely mustn’t set Rob up for a fail, and that did mean perhaps an hour before Cath? I didn’t know but it seemed a minimum probably. And then how much before his third?
“We need a bed,” said Cath. She could be in the GB national athletics team the way she’s going, so she can’t be getting caught nude in the woods. Google finds photos of her in her track kit already - she looks incredible in skin tight. But shy she isn’t, luckily.
“Private,” Rob added. Of course legally he could be in trouble too if we were caught.
“Some kind of cabin?” Tilly suggested.
“Garden cabin?” asked Cath. “I can’t think of one.”
At this stunningly awkward moment we heard the grind of the garage door beginning to open! Mum and Dad! Shit!
Cath, quick as a flash, dashed out of the door and down the stairs. The other three of us waited with our mouths open for the sounds of success or failure. The stairs go down into the hall, and the door to the garage is there too, along with the door into the living room...
I grabbed my robe from behind the door and waved the others to run into Cath’s room - Tills could grab Cath’s robe at least and Rob could dive into the bed. But as we got in we heard my mum:
“Cath? What are you doing? With nothing on? What are all those clothes?”
“Nothing! Just collecting them.” Cath was running back up. But her bare feet were being followed by shoes running. Before we had time to do anything our mum was in the doorway. She can run too.
“Oh seriously.” She stood there, waving Cath through who’d gone into my room first. Rob had hidden his naughty bits behind me, which wasn’t a great message. “Hello Rob. Hello Tilly.”
“Hello Mrs Richards,” Rob replied politely. Tilly just smiled her smile, which softens anyone including mothers.
“Alright,” Mum took a long, long breath while she looked at all of us, right to left, naked and guilty. Perhaps we all looked like we’d just had a cum too. “Well we know you’re safe, I suppose.” She was looking at me and Tilly. “Better than getting caught in those woods you insist on running in, by some pervert.”
“They’re totally safe,” Cath was playing the mature, responsible older sister, while Tills and I just about managed not to grin.
“Alright,” Mum said again, “get dressed and come down and we’ll talk about it, with your dad.
So we put our panties, shorts and tops on again and went down and sat round the table in the kitchen.
“So you’ve all been doing sex,” Dad was slightly smiling, even.
None of us said anything.
“We knew it was coming,” he continued, looking more at me, “it was a matter of when. It’s a bit sooner than we had in mind, but when we think about it, learning from your older sibling and cousin, in a safe environment, with a boyfriend we trust, is in fact a good way to start.”
We all smiled and nodded.
“We’re going to insist on contraception,” Mum said firmly. “So that’s going to happen right now, this afternoon, at the chemist’s. It’s within the five day window, for both of you I think?”
Tills and I nodded, awestruck.
“So you’ll be covered straight away. Cath I assume you’re on already?”
“Well, not really...”
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