School reunion with desperate housewife

I have never submitted anything on here before although I enjoy reading the stories and jerking off to them almost other people do! I am a happily married guy of 35 and am secretly bi, although I have yet to meet with a guy for real (I have had loads of phonesex with males and females and jerk off to porn ranging from straight to bi and occasionally gay).
I am a 5'11" athletic man who works out regularly. I have brown hair, green eyes and a 44' chest with a 34 waist. I am not ugly at all but I am not claiming to be the world's best looking man either. As I said before, I am secretly bi and enjoy the male and female form.
3 weeks ago (just after new year) I went along to my school reunion which I was informed about last year. The event was pretty dull and non-descript - I keep in contact with my friends anyway and I although it turned me on to see some of my former conquests, nothing turned me on more to this day than seeing my former teacher fantasy: my former history teacher who was looking as hot as she ever did!
Her name is Shirley and she is probably about 50ish now although she looks my age and has a body to match: she has brown/redhead hair that was cut in a sexy shoulder length layered cut, brown eyes, at least 36C breasts and long smooth legs - the best I can say is that she looks like the sexy redhead from desperate housewives......you know the one I mean! She was wearing a red trouser suit with a matching jacket and I had my suspicions that she was not wearing a bra or knickers underneath her jacket (I was proved correct later!) I had always fancied her from day one until I left school and I always jerked off to her and she always appeared in my teacher/student fantasies.
To cut a long story short, we began flirting, harmlessly at first and oblivious to everyone else in the room - the night went very quickly and lots of wine was consummed which resulted in me telling her how much I had fancied her and to my surprise, she explained to me that the feeling was mutual and that she had hoped to bump into me at some point. She was still teaching at school (although now as a deputy-headmistress) and invited me to her office. I must point out that at this point, we had revealed to each other that we were both married but her hands we always either on my bottom or stroking my thigh, so I knew that I was able to return the gestures.
The minute we got to her office (my old headmaster's office!) we began snogging as if we were sixth formers. Our tongues were everywhere and I was aware that her husband was back in the main room (my wife was at home). I was kissing her passionately, letting my tongue explore her mouth and I was getting hard at the thought of snogging her. In the meantime, my hands were working overtime exploring her body and I started to undo the jacket of her trouser suit. Shirly shrugged the jacket off and I was amazed to see her now completely topless:
"What do you think of these?" she asked as she displayed her fantastic rack. "I had them done 6 months ago."
Her breats looked amazing - they were so pert for a 50 year old and her nipples were pointing at me. It was so daring for her to go without a bra but now I understood that they were just as pert as they were when I used to grab a sly look down her top at school.
I was ready to explode and undid my trousers while she sank to her her knees and scrambled to help me release my cock which at 8 inches and uncut, looked fucking huge at this point. She gasped as she saw it and licked her lips whilst looking at me.......I was so hard and full of cum I just kept eye contact with her as she got her lips wet by using my cock as a lipstick and wiping my pre-cum all over her. "Mmmmmmmmmmmmmm" she moaned as she tasted my salty pre-cum and began licking the tip of my purple helmet.
My cock was getting wetter as she covered it in her spit and saliva.....she hadn't even put it in her mouth and I was ready to cum!
She eventually slurped and sucked her way down my shaft and I am ashamed to say I was ready to cum within about 10 seconds!
"I'm cumming" I gasped out as she continued her slow but noisy blow job. She wanked my cock as she sucked the tip and I felt 2 quick jets of hot cum spurt from my cock and I saw them hit her lips as she pointed my cock down to her breasts. I don't know where it came from but another 3-4 spurts of cum hit her breasts and dripped down onto her floor as she wanked my cock softly and began sucking it clean.
It was by far the best blow job I had ever had and also the softest and slowest I had ever received. Seeing Shirley with my cum all over her face and pert tits was such a horny sight I have jerked off to it so many times since. Every time I watch desperate housewives, I get a smile on my face and a huge hard on. I would love to say that I went on to shag her senseless that night but that was another night which I will try and write about if you want me to...........please let me know as this is my first attempt at putting my exploits to paper (so to speak). Email me I(guys and girls) if you want to chat more.