I'm Paul, and I am married to my beautiful wife Lisa.
Lisa was my childhood girlfriend and we were in the same class at school. We are now both forty six years old and very happily married, I am an only child and Lisa has a sister called Nikki who is four years older than her.
Despite approaching fifty Nikki actually looks about thirty five, she looks amazing for her age.
Lisa and Nikki were easily the prettiest girls in our school, so I felt very lucky to have Lisa as my girlfriend. As Nikki was older than us she had matured into a beautiful sexy woman by the time we left school, everyone that I knew fancied her.
Nikki didn't seem to have many boyfriends but when she was almost thirty she became pregnant, she gave birth to a girl called Beth and all seemed perfect in her life until it was revealed that the father of her baby had been lying to her, he was actually married had two other children and he was leading a double life. This revelation destroyed Nikki's life and her trust in men. She decided to raise her baby on her own with a little help from family members including Lisa and myself.
After Lisa and I bought our first house Nikki and Beth spent a lot of time at our place and it was great having them around, we all got on really well, and Beth was the bridesmaid at our wedding.
Beth is an adult now and she is living away as she is studying at university.
Nikki still spends a lot of time with us as she doesn't like to be alone.
One evening we all decided to have a holiday abroad together, so I let the girls decide where we should go and Lisa was going to book it.
A few days later Lisa told me that the three of us would be staying in an adults only All Inclusive hotel on the Canary island of Tenerife. We were all very excited as it looked amazing.
Two weeks before we were due to fly to Tenerife Lisa and I were talking when she said, "I haven't been completely honest with you about the holiday that I have booked for us. I will not be going but Nikki is still going with you as planned."
She went on to explain that it will be Nikki's fiftieth birthday during the holiday and as she has been on her own for many years while raising her daughter Beth she wants her to have a special birthday treat, and that treat is going to be me!
Lisa had already spoken to Nikki about it and she was very happy with the arrangement.
"You and Nikki have always been very close and Nikki has told me many times that she fancies you, I have told her many times about our sex life including how you are obsessed with eating pussy, there are no secrets between sisters. If you are happy to go along with it you have my absolute permission to do whatever the two of you want to do during the holiday."
"Are you suggesting that we can have sex?" I asked.
"Yes, that is the whole idea, it will be Nikki's birthday present from us, she has been celibate for eighteen years and she is so excited to spend some personal time with you, I want you to thoroughly spoil her and treat her with the same respect that you have shown me throughout our marriage."
"I know Nikki and I have flirted with each other for years but this is taking it to another level, I don't want it to destroy our marriage."
"You both have my permission 100% so it's not like you are cheating. I have been thinking about this for a very long time and I am very comfortable with the idea. But, after the holiday it ends completely, and unless I specifically ask what you got up to I don't want to know what went on between you two."
The following day Nikki called at our house and the atmosphere was somewhat awkward, Lisa said "Nikki, I have explained the holiday plans to Paul and he is very happy with everything we discussed."
"You really mean everything?" Replied Nikki.
I looked at Nikki and she was biting her bottom lip and smiling at the same time we stared at each other for what seemed like forever until I held out my arms and we hugged. I didn't really know what to say as it was such an unusual situation but the hug seemed to break the tension and we both felt better about it.
"Treat it like a honeymoon and enjoy yourselves and each other." Said Lisa.
"That's a great idea, I'm sure it will be amazing." I replied.
Nikki said, "Wow, I can't wait to leave I am going shopping for some nice clothes to wear in Tenerife."
Lisa and Nikki got ready and went to the nearby shopping centre and were gone for hours. When they returned Lisa said "You are in for a treat on holiday."
Nikki went red with embarrassment, "Any chance of a preview." I asked cheekily.
"No, you can wait for the surprise, I just hope you like it." Said Nikki.
"I'm sure I will."
The morning of our flight while waiting for the taxi to pick up Nikki and I Lisa said to me, "I'm still 100% happy with what is about to happen and I wish you both an amazing time, you can do whatever you and Nikki decide to do but please don't forget who your wife is. I don't want this to ever end our marriage."
"I promise you that I will not let it affect our marriage, you are the love of my life and that will never change." I replied.
The taxi arrived to take Nikki and I to the airport, I gave my wife a big kiss and a cuddle and we were gone.
When we arrived at our hotel we found it to be beautiful, the whole resort was just perfect. We were taken to our suite which had a huge super king size bed.
After unpacking we went for a walk to familiarise ourselves with the surroundings.
We went into one of the bars and had a few drinks. Then we went back to the suite to shower and get ready for dinner.
As we were in a suite one of us could sit in the living room while the other showered and changed to give each other some privacy.
I got showered first and then Nikki went in once I was finished.
Once she was ready Nikki walked into the living room and wow she looked amazing, she was wearing a red dress that reached to a few inches above her knees, showing her magnificent legs, it also revealed a lot of cleavage and her perfectly shaped arse which excited me a lot.
Nikki had styled her short brown hair and with her stunning green eyes complimenting her make up I felt like the luckiest man alive.
"You look absolutely beautiful Nikki."
"You look very handsome too Paul."
As we left the suite Nikki took hold of my hand which felt really nice as we went to the restaurant looking like we had been together for years.
Dinner was very nice but neither of us ate much, we were both slightly nervous about what was going to happen later. Even though we knew that we would be having sex it still had that first date feeling.