My Bestie and I Help My Sister and Her BF
Copyright© 2026 by Daydreamz
Chapter 1
Coming of Age Sex Story: Chapter 1 - Continuing our coming of age, this time with my mysteriously virgin older sister and boyfriend. It's a sequel to Stunning Girls Run in the Woods. (As before it's narrated by our hyperactive young athlete, so don't skim it!)
Caution: This Coming of Age Sex Story contains strong sexual content, including mt/ft ft/ft Consensual Lesbian BiSexual Heterosexual Fiction Sharing
So I’ve just lost my virginity, raping a stalker, and also I’ve started lez with my cousin Tilly. She raped him as well, the whole thing was unreal. But great, ultimately: we got started with sex, and hopefully we’ve stopped him switching off empathy with girls. He did change quite a bit while we had him, and he cares for his mother he said, so I think he does have empathy inside him, if you see what I mean.
My older sister is still a virgin, both ways, so now the usual big/little sister thing is out of balance. Luckily her boyfriend, who’s sixteen like her, is really sweet and fuckable, so Tills and I planned to put things right, and also fuck a guy we like instead of one we don’t.
Cath hadn’t really said yes or no when we joked about it, but she did casually mention there was a concert by our favourite band The Warning, at the weekend, that was being live streamed from Hellfest. She likes them too, and so does ... Rob!
We have a monster TV and audio setup, that our dad worships - I mean you go into our living room and the first thing anyone sees is enormous speakers like monuments not even against the wall, and the second thing is the TV all over the wall like an actual cinema - so Hellfest was going to be on, big time. It goes really seriously loud, and we don’t have any neighbours who’d complain.
Mum and Dad aren’t particularly into Mexican girl rock bands, they were going to Mum’s sister’s leaving us to it. But they’re pretty cool and had stocked us up with Monster and vodka. So it was going to be a bit of a rock party, except Cath was only inviting Rob and I was only inviting Tills.
He’s a sweet guy as I said, smiley and always nice to everyone. This works for Cath as he dotes on her and they just do what she wants all the time, even though he does lots of various sports and has a bod and a face and generally could have any girlfriend.
They’ve been dating for almost a year so why they haven’t fucked is a mystery. Cath is hot too, she does 400m hurdles with her long legs that boys turn up just to watch. Yes really. She’s all over their TikToks but she doesn’t mind, she says she can either cover them up or do track, one or the other, and so it’s track and she just puts her legs on her own accounts too, to keep ownership she says.
Tills and I had talked about how to go about getting Rob started, as well as why we needed to. For one thing Cath is quite conventional, and perhaps Rob is too. We hadn’t talked to him that much, just said hi how are you in passing kind of thing. And I suppose probably most sixteen-year-olds haven’t actually fucked, just talked and thought about it, though a lot have too of course. But so, we had to convert both Rob and Cath from one to the other.
I’d tried asking her about it, but she hadn’t really answered. Of course I hadn’t done anything until a couple of days before either, and nor had Tilly. The athletics scene is pretty clean living, when we thought about it: everyone is healthy, that’s the main thing everyone cares about, to be fast and strong. But now I had started and she was in danger of being left behind. And she’s still an older sister even if she’s not a dominant kind as I said. And normally older sisters expect to be first not second.
Anyway now the first thing was to be sexy wasn’t it, to set an example. And I made sure to be nearest to the door, so when Rob arrived it was me opening it, in just a big tee and panties - shorts, not to scare him off, but white and thin stretch. Though he couldn’t see them while I was standing up, they were for glimpses on the sofa.
So I stood in the doorway with a big smile on, which does affect boys, and only took a small step back into the hall, still holding onto the door. Then as soon as he was in I grabbed him in a hug and gave him a kiss on the cheek!
“Hi Rob,” I laughed, “sorry, I’m so excited!”, touching him all down his arms, and he had to smile back and say hi, and after he’d taken off his shoes I grabbed his hand and led him through.
It’s a great big four seater sofa in front of the TV and surrounded by speakers, and I quickly sat on one end while Cath and Rob had a chaste kiss. Tills sat next to me so she could get at me and either Cath or Rob, which turned out to be Cath.
She’d set the drinks up in front of us and we were just in time as the gig started, live on YT. We have the subscription and it’s brilliant.
So we had the volume well up, through all insane thirteen or something of Dad’s audio channels, and it was quite like a gig, with the drink finishing the vibe off. When I say vibe, I mean that literally as we could feel the beat vibrating our bodies! We don’t drink normally so that was pretty effective too and it wasn’t long before we were all in the mood.
Tills was wearing a loose vest top and a hockey skirt. You can wear them for any sport and the idea is instead of pleats they’re so short they don’t have to stretch, though they are stretch so they cling under your glutes and don’t ride up. You wear shorts under them, and Tilly was, but stretched nice and thin like mine.
It was a hot July day and Cath and Rob were just in shorts and tees as well, and so we were all rockin and touching and getting nicely pissed and enjoying the band. It was too loud for talking, but we were smiling at each other, shaking our hair and everything, and after a while Tilly turned to me for a kiss and we gradually started.
Rob was a bit surprised, but Cath wasn’t of course, so he took his cue from her and just watched while Tills and I made out, kissing and fondling and stroking and then stretching our legs out onto the floor and cuddling.
We did this for a few minutes, then we sat up again and Tilly stroked my right leg ... and Cath’s left! This was the big moment. Cath was letting it happen. Well it’s hard to describe how beautiful Tilly is, with her small turned-up nose, pale blue irises and everything, and being so alive reacting all the time. Rob goggled.