Chapter 3

My wife had always been a bit of a prude when it came to sexual experimentation, no oral sex, missionary position only type of girl, but according to Maria she'd changed. Helen and Maria had a real close Mother Daughter relationship and they told each other everything often making me feel like an outsider. Maria continued to tell me that her Mother had become bored with her humdrum sex life and decided to experiment a bit and discovered what she'd been missing out on for all these years. Apparently she had been unsure of how to tell me, she knew I'd suspect if she suddenly started giving head or demanded anal sex and so had just continued her experimentation with anyone she could.

This evening had all been Helen's idea, it was totally planned. The girls knew I was listening to their earlier conversation and had every intention of having sex with me. The theory was that if I had a threesome with my Step Daughter and her younger friend then I couldn't complain about my Wife's sexual exploits. Well, it was true, I couldn't complain at all and this had just been a rouse to get Helen and I to expand our sex life together with no fear of reprisal.

"So your Mother has become adventurous?"

"Yep, she asked me not to give you any details because she wants to surprise you" Maria confessed, "But I will ask... do you like dogs"

"What do you mean, Do I like dogs? What has that got to do with anything?"

Maria and Lisa laughed loudly and as I watched their firm and ample bosoms jiggling I felt the old familiar stirring as my cock started it's ascent.

"About time" Lisa exclaimed as she noticed the change, I need that thing inside me, do you want to fuck me Mr Cook? My pussy was real tight a few months ago and after having sex with Helen she said your dick would never fit, so her and Maria have been stretching me for you. Let's show him Maria"

My wife had been having sex with Lisa? My mind was in a blur as the possibilities flashed through it.

Lisa lay on her back in the living room and Maria moved between her open legs. Lisa's pussy was still wet from Maria's licking so Maria had no trouble inserting three fingers into her. Lisa moaned with pleasure as Maria finger fucked her for a while before inserting a fourth finger. Lisa began to thrust her hips up in rhythm with Maria's hand and when she came her fluids ran from her and onto the carpet. This sudden surge of lubrication allowed easier access for Maria, who took full advantage by easing her entire fist into her friend. This was an awesome sight, my Step Daughter was fist fucking her 16 year old friend while I sat watching and stroking my now revitalised member.

"See Mr Cook, I'm big enough for you now"

"Come on Dad, let me see you fuck Lisa. I want to see that big prick of yours inside my best friend"

I didn't need asking twice, but I insisted on a different position. I'd had enough missionary to last a life-time.

"I think you should fuck me Lisa", I said as I lay alongside her, "Show me what you can do"

Lisa quickly got up and Maria's fist made a slurping sound as it came out of her. She straddled my member and just rubbed her sex along it's length from balls to tip. I lifted my head as she leaned forward, taking her right nipple into my mouth. This continued for a few minutes before Lisa climaxed.

Her flood of juices cascaded over me and ran between my thighs where Maria was waiting to lick up as much as she could before taking me into her mouth and cleaning me of her friends cum.