It was my birthday and also my privilege to have Denise call on me for the special day.
Denise even showed up in her white nurse's uniform for my exclusive pleasure, knowing it was the best possible present she could give me.
So many of my younger fantasies had been generated by knowing Denise as a family friend and having encountered her now as an adult and in such a sexual way was the one of the most fulfilling experiences I could have imagined.
During our ongoing relationship, we had been lucky enough to explore many of these β Denise had been so wonderfully understanding (and accommodating) by being willing to learn about my earlier desires and in turn act these out for me in our sexual union.
I was also now providing for her an exciting and intense set of experiences in the prime of her mature years β reaffirming her desirability and opening her up to new and quite dirty activities which she had clearly never done with anyone before β not even her ex-husband of many years.
This was the first birthday I had spent with Denise and it seemed that she had something of a premeditated plan to make it a memorable one for both of us!
We hugged extensively when she first arrived after work at 6 pm.
Given the time of day, it was likely that Denise had figured that I would be expecting to find a well-worn pair of undies under her uniform and that whatever had been going on inside them throughout the day would be soon revealed to me, one way or another.
We were at a stage of our relationship also that many of the "secrets" and "taboos" that may have caused hesitation or trepidation at an earlier stage were much less of an issue.
If something came up that was "new", we were both comfortable enough with each other that it would simply be a new adventure and yet another extension of our repertoire.
In this regard also, we were lucky enough to be sharing experiences more on the "dirty" side of the ledger, rather than "kinkier" ones that may involve inflicting pain on each other or exploiting extremes of power dynamics β none of which really appealed to either of us.
Denise being a nurse too, was an advantage to the cause β the fact that she was so familiar with the human body and its functions and had probably seen the worst and ugliest of it during her working life that our own dirty intimacies were more fun and adventurous than gross and off-putting.
In any other circumstances with another person, they might have been β but not with Denise β a fabulous position to be in no doubt, and I hoped she felt the same way towards me.
"I thought you would enjoy some nice surprises for your birthday", Denise could not have chosen a better opening line.
Already my anticipation was high knowing that she had deliberately attired for the occasion and was now offering even more by her intimation.
"Whilst ever I'm still alive!" was the best response I could present.
"Where would you like to start?" Denise gave me the option. "Bedroom or bathroom?"
Keen to leave the best till last, I took the bedroom.
Denise took to the bed immediately, adopting an "all-fours" position, purely to give me the best view of her large behind in her nurse's dress and as the fabric pulled tight, I could also see the line of her undies underneath.
"Do you like that?" Denise asked rhetorically.
"Mmmmmmmm...I can see the line of your undies..." I replied.
Knowing that's what she intended, Denise said nothing more but continued to roll her big bum in front of me, until such time that I started to participate by running my finger along both sides of her undie line down to where they disappeared between her legs.
I did this a few times, pushing my finger down further and closer to naughtiness each time.
Denise responded by rolling and pushing her bum more rhythmically to my curious finger.
Just this relatively low-impact gesture was clearly so arousing for both of us as we silently pursued our dirtier endgame towards the bathroom and whatever that may hold in store.
Not able to resist any longer, I took the liberty of lifting Denise's white nurse's dress to examine further what I knew lay underneath.
Immediately, I caught a wonderful view of her large white underpants stretched up and over her large buttocks and hips and even better to where the wide cotton crotch pad ran down between her legs and covered her undercarriage.
My hands readily wandered.
I gently caressed them over her panty-covered buttocks, also running my fingers along each side of the elastic borders of the panties, momentarily slipping my fingers underneath and then releasing them quickly to allow the elastic to "snap" back into position; repeating this at least a couple of times with little noise of complaint from Denise.
Gazing longingly down between her legs I happened to notice a slightly bigger bulge than what may have just been the extra layered crotch panel of her knickers.
My heart skipped as I quickly came to realise that Denise had a sanitary pad in place β ever so slowly moving the tips of my fingers down across her bum crack towards the extra bulk.
As soon as my fingers made contact my hopes were fully realised β Denise was wearing a sanitary pad and I immediately wondered whether this was the first part of my birthday "surprise".
I paused for just a moment before commenting, "Ooooh...you're wearing a pad?!"
"Mmmmm...I figured you wouldn't mind!" she replied.
"Of course not!" I admitted without hesitation. "Is it your period?"
"No." It was now Denise's turn to pause. "No. I've had extra 'lady issues' now for a few days and it's been a little smelly. I've just been slipping in a mini-pad for extra protection for my undies and to absorb some of the odour when I'm at work." Her graphic honesty now had my cock rock hard. "I know how much you like seeing the inside of my dirty undies darling - I thought this might take it just a step further for you!"
"Mmmmmm. It's wonderful!" I stuttered as my heart thumped hard against my rib cage. I was now close to speechless.
"I got the idea you might have been going through the trash in my bathroom when you had the chance. Maybe taking some of my dirty knickers in with you to jerk off and looking to see if you can find any used pads or tampons?" Denise was revealing her feminine sensibilities to me in a most remarkable way.
In actual fact, I had indeed taken a few chances to sneak a look when using her bathroom at different times, but not taken the courage to go one step further and actually handle the couple of wrapped-up pads I had discovered.
Still, she was totally on the right track.
Not knowing exactly how to respond to this, I instantly felt pangs of embarrassment and shame in equal amounts but at the same time, an intense rush of excitement as Denise revealed herself to be even more "tapped in" than I could have imagined.
"It's OK darling!" she continued, much to my relief. "I know you're so curious! It's actually very exciting to me to know that you're going through and snooping my very private and feminine items like this!"