It was an ordinary Tuesday in March.
After lunch, I packed my swimming trunks and a towel in my backpack and went to the swimming pool. 
To get there I had to travel three stops by city bus.At the second stop my girlfriend got on the bus. She is 19 years old and her name is Katy.  She was a beautiful woman with long blonde hair, beautiful breasts and nice small ass.We met by accident.
-Hi Kate,where are you going?  - I asked.
-I'm going to the swimming pool, and you?
-I happen to be going there too.
-That's great. Can we go swimming together?  - Kate said and kissed me on the cheek.
When we arrived, I said: - Kate, let me sponsor your ticket today.When we arrived Kate says.
-I'm going to change now and she went to the dressing room.
I bought tickets and also went to change.  When I left, Kate was gone.So I went towards the large swimming pool.I went into the water, looked around and saw her in the water.So I swam towards her.
She wore a two-piece outfit consisting of a halter top and thong.Everything in a beautiful blue color.
"Beautiful costume," I said.
-Thanks, let's go to the jacuzzi - she suggested.  When we were walking, Katie was walking in front of me and shaking her small ass.
This turned me on a lot and I decided to play with her body today.
We had been dating for quite a long time and made love often.
When we were lying in the jacuzzi, Kate asked: - Are you free in the cottage tonight?  -Unfortunately no,my parents are at home today.
-It's the same for me - she said and smiled.
We were alone in the jacuzzi.
There were only a few people at the pool today.Kate swam over to me and sat down next to me.
I really wanted to fuck her today.So I accidentally pulled the ribbon that tied her bra.  -Hey, not here, someone else will see us and there will be a scandal.She said and quickly tied her bra.
"I feel like having sex today too," she said but where are we going to make love,we don't have a free cottage, I said.
-Listen, there are not many people at the pool today, maybe you could somehow get to the women's changing room - she said.
"We can try," I replied.
So we left the pool and went towards the locker room.
-Wait here, I'll come in and let you know if the locker room is free.Kate went inside.After a while,she opened the door and wagged her finger at me, com in here.
I looked around to see if anyone was coming and quickly entered the women's changing room.
-Listen, what if someone comes in - I said.  Kate didn't say anything for a moment.After a while she said.
-Let's go take a shower, shut up and turn on the water so no one will disturb us.
We moved on to the shower.There were several showers on one wall, not separated from each other, and on the other side there were two cabins.
-Where are we going?  - I asked and started undressing her.
-Let's go into the cabin so that no one disturbs us.So we went inside and closed the cabin door.Kate was already standing without a bra.  I started kissing her breasts,small and soft exactly match to my open hand,they were very firm and nice to the touch, her small soft nipples start getting hard.She sighed and moaned.She took off my shorts and grabbed my small cock its getting hard.She started sucking it off me.At one point we heard the door open.Kate quickly got up and turned on the water.She also chewed her bra through the top of the booth to make it obvious that she was busy.After a while,we heard the sound of water from the shower near the wall.
I took the thong off Katie ass and also hung it across the cabin.I started giving Kate cunnilingus.After some time,Kate turned her back to me and stretched out slightly.I shoved my penis into her wet pussy.I told her ear not to moan too loudly because this woman might know what we are doing here.
We fucked hard.At one point I took my dick out of her pussy,smeared it with soap and inserted it into the other hole,we wanted to make anal love.I was caressing Katy's pussy all the time.She start moaned loudly and I realized that she had an orgasm.
The woman taking the shower turned off the water and left, she must have heard us, I wondered if she was masturbating when she heard us... I opened the cabin door and we got out.
Kate crouched down in front of me and took my cock into her mouth. 
She started sucking him hard.
I couldn't stand it and I ejaculated, covering her whole face and breasts with hot sticky sperm.  Kate went to the shower near the wall and washed herself of semen. 
We got dressed and left. 
From that day on, we often come to the swimming pool and make love together.