The idea first came to my husband and I on our honeymoon. He had stopped licking my pussy and said.
"You notice how so many of our friends are divorced, some after only a few years of marriage?"
I groaned at the absence of his tongue, my wet pussy was really all I was thinking of at the time so I said.
"Yes, I've noticed but please put that damn talking tongue of yours back where it was."
Mike did as I asked and soon I was reveling in a wonderfully blissful orgasm, cascading though me and washing Mike's face with my juices. I pulled him up by his hair and kissed his sloppy face, tasting my own cum and relishing it as much as I did his.
"OK! What about our friends?"
I asked when I took a breath. He placed a hand on my left nipple and squeezing it he repeated what he'd said then added.
"I don't want to end up like them, I don't want us to ever grow weary of one another. I know, here in this tropical island that neither of us can see the day it might happen, but are we so special?"
I thought of our friends who all seemed as happy on their wedding day as we were and tightened my arms around Mile and asked.
"So how do we make sure we don't end up like them?"
I reached down and stroked his hard hot cock as I said that anticipating the moment when he would fill my post orgasmic pussy with it and Mike said.
"Val, I think we need to be more aware of one another, do something to renew our love as often as we can, do something to keep us aware of each other and not let ourselves get drowned in life, in bills and kids and all that. We need to always keep the fire of our love warming our life and not let our life cool our love."
I looked at my husband, so young and handsome. Six foot tall, trim and fit, dark piercing blue eyes and a tenderness in him I never expected. I wrapped my legs around him and pulled his cock into me. I imagined my own body, five foot five, as slim and trim as Mike, a full head of chestnut hair, breasts the size of small apples and an ass just plump enough to cushion his thrusts and I saw that we'd not always have our youth and energy, how we could easily fall into the same traps that probably started the cracks that led to the dissolution of so many marriages. Mike made love to me that afternoon and as he erupted, letting his hot cum fill my pussy, I vowed to work with my husband to do what we could to keep this flame alive.
The rest of our honeymoon we spent in bliss, having sex whenever we wanted and enjoying each time more then the last. It wasn't till we'd been home a few months and settled back into our respective jobs that we again picked up that thread we'd unspooled on our honeymoon. The spark of the idea came from Mike, but together we'd hashed it out. We'd often discussed our sexual fantasies, some we wanted to experience some that we just enjoyed masturbating to some we knew would not work for both of us. Then Mike said.
"Let's buy three lock boxes. One for you, one for me and one for both of us, and into them we can put our fantasies. We'd each keep the key to our own boxes and the third would be set up so that it would only open to both of our keys. We'd each fill our own boxes with desires or fantasies we'd want to explore. Then on your birthday you'd open you box for me to pick one of your fantasies, on my birthday you'd select on of mine. The fantasies would be sealed in an envelope allowing chance to take us wherever. In the third box we'd each put fantasies and on Christmas, New Year, Valentines Day and our anniversary we open the box and take one out."
I thought about it and knew there were things I just could not do, and I knew Mike also had some things he would not do so I said.
"OK, but we'd need some ground rules. First of all, I can't see inviting other people into our sex life as a good thing so no threesomes, no orgies!"
Mike agreed and we worked out what things we would not do. We did not comment on what we would do so unless it was eliminated anything else was doable. It took a few weeks for the two of us to come up with some fantasies, I guess we were relatively timid and shy at first, most of our initial experiences were tame, dress up, roll playing, sex in different places of the house (washing machine was my favorite).
Now we could always add to our individual boxes and to the "holiday box" as we came to refer to it. In this way we began to push each other a little further into erotica. The first step was the introduction of various "toys" and then more intense roll playing situations. Because Mike's birthday was in March, my birthday was in September, Christmas and New Years at the end of the year, Valentines in February and our anniversary in July, we had a nice spread of time throughout the year.