I had just got out of hospital after a fortnight in there.  The length of time was because I lived alone and had nobody to look after me when I left.  Whilst in there I had an operation, and the doctors afterwards was telling me that I needed to exercise more.  They were right my job, which I did from home, entailed me sitting down for hours on end.  I also knew that I would get out of breath very quickly.  In the hospital I was visited by the physio therapist, and she recommended a walking group that met once a week.  She told me it was run by one of the doctors from the hospital and they looked after those of lesser abilities in walking.  She gave me a number to ring.

On my release I rang the number and spoke to what turned out to be the doctor’s wife.  She told me that each week they would drive to somewhere, usually out in the country, and do an amble of around three miles.  For those new people or less able they usually paired them up with another walker to make sure they were ok and got around the walk safely and ok.  I got the location for the next walk and decided that I would go. 

It was a fine sunny morning when I thought that I was in the wrong carpark as mine was the only car, and it was just a few minutes before the walk was due to start.  Then suddenly loads of cars were arriving.  Quite quickly the doctor singled me out as I was the only new person there.  The physio therapist had told him about me and straight away he asked a young lady called Tina to team up with me.  Tina was in her early twenties and quite a pretty girl, where I was in my late thirties and not in particularly the best of health.  Quickly the walk started and although it was at a relatively slow pace, I was beginning to lag a little.  Tina was patient with me and kept encouraging me on.  I was glad when the main group stopped to take in a sight as it enabled me to catch up.

The doctor spoke with me to see I was alright before the rest of them set off again.  Tina’s encouragement had lapsed into flirting and teasing.  She promised me a treat if I got all the way around.  I hadn’t been flirted with since well before my wife had died in a road accident, and that was in my mid-twenties.  In fact, I hadn’t really talked much with anyone of the opposite sex since her death, but here I was flirting back with this young lady.

By the time we got back to the car park, all but the doctor and his wife had already gone.  The doctor checked again that I was alright and then he and his wife drove away as Tina told me it was time for my treat.  To my surprise she had a picnic with her in the car and she led me a short way from the carpark to some picnic tables.  As Tina climbed over the bench to sit down, I got a very good view of her little yellow panties.  I wasn’t sure if it was deliberate, or it just happened.  Either way I enjoyed it and as I stepped over the bench on the opposite side of the table, I had a good view down Tina’s blouse at the fine swellings of a substantial pair of knockers.  I was glad that I was now seated as the two sights that I had been rewarded with had my cock swelling for the first time in a very long time.

Tina was spreading the food out and pouring some non-alcoholic wine for us to drink.  I was thoroughly enjoying myself even if I had found the walk fairly tough.  Tina was still flirting with me even though the walk was over.  She was telling me that there was an even bigger reward if I walked a little further with her after the picnic.  It wasn’t so much what she said but the way she said it and shook her boobs that had my cock almost to full mast.  The picnic was soon over, and Tina asked was I ready for another short walk.  As she said it, she stood and bent forward showing me quite an expanse of tit flesh as she did.  I told her I was, and she had me wait where I was while she took the picnic stuff back to her car and returned with a blanket.  I was intrigued as to why we would need a blanket, but I didn’t ask.

Tina was right it was just a short walk, and we were beside a river that I never knew was there.  We were walking along the tow path that ran alongside the river.   Tina was teasing me that I probably took all my ladies on walks along deserted areas like this.  I played back to her, telling her that she knew what happened to naughty girls that tease and go deserted places with men.  Tina joked that she should be so lucky.  Then she was telling me that we were there.  The tow path had opened out, and there was a nice grassy area where Tina bent right forward, and I was again treated to an even better view of her ass and tits as she spread the blanket.   I could feel my cock swelling again after it had dozed off during our short walk. 

The flirting continued with Tina saying that I was a dirty old man for looking at her ass and tits.  I flirted back telling her she knew what happened to naughty girls that show themselves off.  As we sat on the blanket Tina flirted asking me what happened to naughty girls.  Again, it wasn’t what she said it was the way she said it.  I told her naughty girls got their bottoms smacked.  Tina just smiled and wiggled making her tits wobble again.  I wasn’t truly sure if it was just banter or whether she meant it when she said that I would have to show her.  She was looking directly at the erection in my trousers that was causing them to tent out.  With that I grabbed her arm and dragged her across my lap and quickly landed a sharp but not very had blow on her ass cheek.  Tina squealed and then groaned. 

I took the groan to mean she enjoyed it and landed several more blows.  Each blow got the same reaction and after about the sixth slap I stroked the reddened flesh.  Tina wiggled her ass driving her crutch harder into me and my now very hard cock.  As she had made no attempt at getting off me, I slipped my hand below her panties and stroked her bare ass and slid a finger between her legs.  Tina sort of cooed as the finger slipped into her pussy and she even pushed her ass back to facilitate deeper penetration.  It wasn’t many minutes before I was frigging her hard with two fingers deep in her pussy and Tina was grinding her pussy mound against my erection.

Then out of the distance we heard voices and had to quickly disentangle ourselves and straighten our clothing before an old couple whose voices it was came into view.  I was trying to keep my erection forced between my legs, so it didn’t show as the couple walked on by.  The moment they were out of sight Tina was on top of me and getting my cock out of my trousers. It was like the excitement of nearly being caught had turned her into a sex mad woman.  The moment my cock was free, Tina had turned around and whilst my cock disappeared into her mouth and throat, her pussy still covered by her now soaking panties was thrust into my face.  I soon pulled them to one side as my tongue sought out her sensitive spots.

My poor old cock that hadn’t been touched by a woman in many years was soon ready to burst and on telling Tina she sucked all the harder and was rewarded with a mouthful of my hot thick cum.  Unlike my late wife who was the only other woman to have sucked my cock, Tina swallowed the load that filled her mouth.  Cilla my wife was a spitter and never once swallowed.  The moment it was gone down her throat Tina was back sucking my now wilting cock.  Having had so little use in recent times it was soon swelling again as I continued to lick and suck at Tina’s rather wet pussy.

Then Tina was disentangling herself from me.  For a brief moment I thought it was all over and she was going to leave me with a hard on.  But no, Tina told me it was time for my treat and with that she removed her panties and threw them at me as she undid her blouse and removed her bra.  Then she was pushing me to lie flat as she mounted me and holding my cock steered it to her opening and slid it slowly into herself as she lowered onto it.  Then she was off like a horse out of the traps, riding for the finish line.  I was thoroughly enjoying the ride and Tina’s well developed tits swaying above me.  I reached up to cup and massage them.   Tina came well before me having been well stimulated by my fingers and then my tongue.   I on the other hand having come already was able to go much longer and I had to roll Tina over and climb on top as she had stopped responding. 

Tina was looking up blankly with her big brown eyes as I slid my cock back in and resumed fucking her.  It was several minutes before she started to move with me again and even longer before she was positively thrusting hard against my cock as I fucked her.  Then I had the most fantastic orgasm.  Way beyond anything that I could recall with my late wife.  I was vaguely aware that Tina was gasping and groaning as my orgasm subsided.  It was several more minutes before we untangled ourselves, and even longer before we straightened our clothing again.

We were sat up all prim and proper when the old couple returned and passed us again, going towards the carpark.  Tina asked what I was doing the rest of the afternoon.  I flirted that it was her that I was doing, and Tina pouted saying something like, “Oh goody,” in a childish voice.  We returned to our cars and Tina followed my car back to my house where we spent the rest of the afternoon in my bed.  Before Tina left, she asked if I would be coming walking again.  I told her that if the reward was anything like todays reward, then wild horses couldn’t stop me from going.  It was now that Tina informed me that her first time walking with the group, the doctor gave her a similar treat after the walk.  I was a little shocked.  By the time Tina told me that since then she had slept with about a third of the men, and their wives or girlfriends also slept with the other men, I was dumbfounded.  It transpired that I had found and joined a swapping group without knowing it.

Tina teased me that she had seen me looking at the doctor’s wife.   I had to admit that she was very attractive, and Tina said that if I was a good boy the following week she would see if she could organize for the doctor’s wife to be my walking companion that day.  Well, that is another whole story.  What I will say is this all occurred a little over five years back and I still walk every week and most weeks I spend the afternoons with different women.  I have even partnered up with one of the single women and she spends most nights in my bed with me.