So I’m 35 and my sister in law (25) is home from abroad for Christmas. Usually she fucking grates on me but sometimes we get on together and have a laugh. I’ve never been too attracted to her but there are times I’d love to fuck her.

It was 2 nights ago and she came to stay at our house. It’s one of those rare nights I think she looks pretty fuckable.

She’s wearing a mid thigh tight dress clinging to her slender hips and belly (she’s put on a little weight since I last saw her) and her c cup titties are busting from it. Great cleavage too. The three of us had a few drinks and laughs and sis in law jen suggests a game of truth or dare. We agreed but thought there’s not a whole lot we can do is there?

The game moved slowly, some truths about celebrity crushes and dares surrounding drinking. Its in the back of my mind that jen is extremely unlucky in love and hasn’t had even a date in a long, long time – not surprised, she can be a bit overbearing – and I straight out ask ‘when was the last time you got fucked?”

My wife gasps and hits my arm. I grin at jen and she blushes… But she has to answer.

“oh my god you can’t ask that!” she takes a drink “10 months ago and he wasn’t all that” and she makes the small dick signal with her pinky. We laugh. A plan forms in my head.

Its my turn to ask my wife and this is when the alcohol really kicks in. “truth or dare honey?” “…. Truth” FUCKING JACKPOT

“I… dare you to.. Let me take your sister upstairs and show her a good time for Christmas”

She goes mad. “no fucking way! No no no. This isn’t happening”. Sorry baby, thems the rules. I grin again. She eventually agrees. Holy shit!

Jen sits quietly but then smiles a little “sorry sis but I’m pretty desperate…” what the?! She winks at me though. Cheeky.

My wife gives four conditions. No kissing and no oral. Wear a condom. And not in our bed. We ‘reluctantly’ all agree and off up to the spare room jen and I go.

She sits on the bed and I stand over her and take my top off, then sit beside her. We both grow hesitant but then I place her hand on my chest and let her run it down my body. She smiles again. Fuck she really hasn’t had any sexual contact in so long! I use my hands on her. Caressing her thighs, up her stomach to her boobs. A good 36c cup. Looks like she really enjoys being touched. She stands and slips her dress off. Her body isn’t anything special. She doesn’t have a great ass or hips, but her boobs are pretty good I gotta say.

I tell her to lay on the bed as I stand again and undo my jeans and strip to my pants. I also ask her to leave her glasses on. She looks cute in them. She lays in her bra and thong and I get on top of her. It’s awkward as fuck, yes. I part her legs and touch her. She instantly moans. This girls been starved for too long. She undoes her bra and removes it and plays with her nipples. I help with my other hand and smile at her.

She’s loving it, absolutely loving it. So much so that as she grabs my dick and rubs me thru my pants, she lifts her head to kiss me. I pull back.. ‘rules?’ ‘fuck the rules and kiss me’ she says! I do as she says and we share a pretty hot kiss. She’s soaking at this stage. I toy with her clit after I’ve moved her thong aside. She has a nice grip on my dick and she knows I’m throbbing at this stage. Our tongues play with each other and we maintain eye contact throughout.

“fuck me” she says. “fuck me now”

I move off her and take my pants off as she removes her wet thong at the same time. “shit, I don’t have a cond..” I don’t get a chance to finish “I don’t fucking care, I want you fucking me now.” she stays missionary. Who cares?

I don’t hesitate and I slide so easily into my sister in law. I waste no time in fucking her good and hard. My rock hard dick sliding in and out with ease, fucking my sister in law raw. The bed squeaks with every thrust. She’s moaning like fuck, digging her nails into me as I fuck her.

“fuuuuck I’m gonna cum!” already I think!? And not long later another moan as I feel her gush on my dick! Damn this makes me go even harder into her. She tells me to keep going til I’m close. I last a while longer, hammering my dick into my sister in law, eyeballing her as I do so. I bite my lip and pull out at the worst time!

But she instantly sits up and takes me in her mouth, working my dick quickly. Within seconds I moan and release in her mouth. Holy shit! She swallows every drop.

My jaw literally dropped.

“thank you” she says with a satisfied smile. She gives me a kiss after she put her clothes back on “happy Christmas”

And off she went back down to her sister.

Happy Christmas indeed.