Frozen in place I kneel there my penis being pushed in between Leah's soft pussy lips, being as quiet as possible listening out for any noise. A few seconds later I hear another soft little moan. The changing rooms were empty so were was this moan coming from.

"Leah stay here and make sure nobody touches our thing" I whisper while I put my wet shorts back on to find out were the noise is coming from. I go to the end of the room and turn left to the other set of showers. I could not believe my eyes the man from the swimming pool was in the shower with the two kids he had one on each side of him. His hands under the girls swimming bottoms. I can just see something in there pants push down on the cloth then going back into the pants.

They were just so beautiful the youngest one with her dark brown hair she looked almost as if she didn't know what to do but when the finger entered her there was a little glimpse of pleasure in her eyes, while the older girl seemed to have a lot more practice her hands almost guiding the man's hand (who I'm pretty sure is the girls dad), she has lovely blond hair just like Leah's hopefully I can have Leah like that one day. That reminds me, I leave the lucky dad with his girls and head back to Leah.

So many thoughts going though my head as I head back. When I get close I hear a guys voice coming from the corner near where I left Leah as I get closer I hear him say "Seven..... Six..... Five....." I turn past the lockers and see a guy standing there counting while his penis is sat in Leah's mouth, I froze in place the look of my little sister with someone else's penis in her mouth, she just looked so cute and his penis has loads of huge veins all over with a little curve that went up and ending in Leah's mouth having his whole tip inside being at least 7-8 inches then the tip that was in her mouth made me feel so small.

"two..... One..... Wow your amazing you can hold my fun stick in your mouth for a minuet and you never stopped licking it, your a lovely girl Leah, here is the pound you get for winning the game. Next game you have to drink my gooey drink from my fun stick and if you drink it all you will win ten pound" he said stroking his penis.

"OK" Leah replied not wasting any time her mouth opens ready for the gooey drink of cum.

What should I do I mean its my sister and this shouldn't be happening but I'm just so turned on watching my Leah playing with such a big penis. He puts his penis in her mouth and starts stroking it faster. If I'm going to do something I need to do it now, he starts to moan so I jump in "What are you doing?" I ask trying to sound masculine. He turns to me with a surprised look on his face and leans back a bit pulling his penis out of Leah's mouth, as soon as it comes out its erupts all over her face, then he quickly pulls his pants up and runs off. I walk to Leah, she is standing there with cum dripping down her face onto her stomach, wow she just looks beautiful her fair white skin glistening with gooey cum, just looked like a dream.

After some admiring I quickly took her to the shower, she was still absolutely nude so I was trying to be as quick as possible to wash all the cum over her. Guys started to walking past paying a lot of attention to her. I washed her face, washed her stunningly soft developing breasts. After I had washed all of the cum off making sure her little pussy was well washed. We walked back to the corner half way we passed the dad and his kids they were dressed and ready to leave as they walked past us he turned to me and said "were back on Wednesday" with a smile on his face. Then he walked off. Totally forgetting about Sam and Jordan we left after getting dressed, I took Leah outside somewhere in private so people couldn't overhear me and had a quick talk to Leah.

"OK Leah you can not tell mum what happened its a secret and if you don't tell her you can come swimming next weekend," I said worryingly. Please say OK, please say OK, please say OK, she stood there for a while all I could think about is what would happen if she did tell mum what would happen I could go to jail, she would disown me, my mind running at one hundred miles an hour then.

"OK."

"I'm sorry what?" I said not catching what she said with my mind slowly coming back to reality.

"OK I wont tell if I can come back next weekend."

"Of course you can, but one word to mum and I wont be happy with you."

We walked back to the front of the swimming pool. We waited there for five minuets then mum came to pick us up.

"Hello hunni how was swimming."

"Good, Jack said I can go back next weekend with him" Leah said with a grin on her face.

"How was it looking after her, hope she wasn't to much trouble?" mum asked.

"No she was perfect want her to come again."

"Good to hear that, I have to work next week and I will be gone most of the time but Leah doesn't have school so I need you to look after her in the day time."

This is a dream come true, After today I want to spend as much time as I can with her. Trying to look like a big brother and put up some resistance "But mum that's not fair I have looked after today".

"Look if you do this for me and I will get you something for the trouble, we got a deal"

"Sure" I said holding back my excitement. All my worrying stopped Leah wont be able to tell mum and I can play some of my own games with her and if mum is out I can go back swimming on Wednesday with her and see what that guy has in mind.

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Thank you for reading hope your enjoying this story so far. This was only a test to see how people like my story's if you like please review.