THE SISTER IN LAW BACK UP PLAN

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'No. In fact I came off the pill a few weeks ago '

I looked across at Lorna who was on her knees watching us intently and smiling.

I realised then that the sisters had a plan for tonight that went beyond just a threesome.

'Adam, I want you to fuck a baby into my little sister, ' said my wife. 'I don't know why we didn't think of this year's ago.'

My cock throbbed again.

'Stacey, are you sure about this? It means a lot to me that you would do this for us.'

My sister in law smiled.

'It means a lot to me too, bro. Plus, it'll be a lot of fun having you try to knock me up. We can practice a lot, right?'

'Right,' I said, light headed at the thought.

Stacey moved her hips and tightened her arms around my shoulders, and I felt the head of my cock brush her slick centre. I gasped at the contact. I would fuck her hard and yes I'd fuck a baby into her any day.

I didn't want to wait any longer and as I lowered my mouth to Stacey's, I moved forward and finally, finally after many years of dreaming about this moment, I slid the first few inches of my cock into her slippery pussy, opening up her lips with the width of my erection. She was tight and the delicious squeeze on the head of my cock made me throb.

She hissed. 'It's been a while,' she explained. 'But don't go easy on me, I want a good hard fuck bro.'

With that and in one smooth thrust, I pushed past some resistance and penetrated her fully, burying myself deep inside her warm and wet pussy, all the way up to my balls.

We both groaned at the sensation as I filled my hot MILF sister in law up, as she gripped my shoulders and wrapped her legs round my back.

'Oh fuck, Stacey.'

'Oh yeah. God that feels good.'

I fused my mouth to hers, lowering myself on top of her, those beautifully soft, big tits squashed between us. I started to move, achingly slow at first, as I pushed gently in and out, getting used to being inside her. I had never been unfaithful to my wife and it was incredible to be inside a different woman. More so that it was Stacey. My heart thumped as I pressed my whole body against her soft curves, our heated skin touching.

We kissed passionately as I began to stroke more firmly into her core, feeling the hairy top of her mommy pussy rub against me and her tongue in my mouth.

Stacey broke the kiss and I tenderly pushed her hair back off her damp forehead and looked down at her pretty face, meeting her intense gaze as I rocked into her slowly, rising up on my arms. Her breasts bounced gently on her chest, her nipples thick and stiff.

'Adam,' she breathed, dropping the bro tease, sincerity clear in her hushed tones. 'Oh, Adam, I, I love you, Adam. I always have.'

My cock throbbed deep inside her at her declaration. 'Fuck Stace, I love you too.'

Her pussy walls squeezed me as she looped her arms round my neck and I dipped to give her a quick kiss, still buried between her soft thighs.

Then Lorna was kneeling by our side, her fingers rubbing her own wet slit as she watched us both. Then she reached down and smacked my ass and we three all laughed.

'Alright lovebirds, glad you finally came clean with each other. Now Adam, I want you to give it really hard to my little sister. Go on, fuck her pussy, baby. Make her come all over your big juicy cock.'

At Lorna's words, lust my for sister in law took over and I increased my pace, stroking harder and deeper into her, stretching out her pussy as I watched her tits really bounce around now, fucking her into the mattress.

The wet sound of me thrusting in and out of her juicy pussy over and over and the slap of my balls underneath where I was penetrating her was loud enough to hear over our mutual moans and groans. Stacey started to pant and tightened her legs and arms around me, hanging on to me as I took her hard and fast.