This is my story and is also published elsewhere.
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Dear Mistress,
First of all let me thank you for potentially giving me the opportunity, with your help, guidance, humiliation and discipline, to fully realise my core nature of being a cuckolded, sissy faggot worthless to any woman sexually, but rather a loving, supportive partner in anything a woman chooses.
To truly understand that my small penis and beta male ways are not suitable for sexually satisfying any woman, but rather to be locked in chastity and that the only way I could please a woman sexually is by supporting her to find a real man capable of giving her the sexual satisfaction I can't. That only my oral skills should be made proficient to offer her some release when her lover is unavailable or to orally clean her vagina after her lover has deposited his seed inside her. And accept that her humiliation of me (privately or publicly), her pegging me, her inflicting pain on me and her disciplining me are all ways I can please her.
And to learn to appreciate that, whilst I am straight and will always find women sexually attractive, because I'm unable to satisfy a woman then my own sexual pleasure will only come from my being anally penetrated by dildo, strap-on and a real man's penis and will be turned into a sissy faggot so that I concentrate all my sexual desires and fantasies around cock not women. Any masturbation will only be to gay or sissy porn, or femdom porn so that I associate my sexual pleasure with being used by men or dominant females; or masturbating as I watch my Mistress being satisfied by a real man as I'm cuckolded.
To accept that I will be milked, not masturbated (unless in above instance), to release any build up of semen, thus denying me any sexual satisfaction from orgasm, and that I must always lick up and eat any semen I produce to ensure I grow to love the taste of a man's ejaculate for those times when I will either be eating creampies from my Mistress's body/pussy/ass or sucking any men who require it of me to orgasm.
To learn to take corporal punishment, accept CBT (cock and ball torture) and endure any punished my Mistress requires of me either for my education in obedience or for the pleasure of my Mistress.
Now I appreciate thst whilst this isn't a conclusive or definitive summary of my needs it is rather comprehensive so, with that in mind and, as requested, the following gives some background and experiences that have led me to this desire and need to be cuckolded, dominated,humiliated and sissified into an obedient, cock craving, pussy whipped pathetic beta male. And, at the end, I'll give you an insight into the kind of relationship I'd like to have if I was lucky enough to meet a woman.
Until my marriage (aged 27) I was a sexual active Alpha male. I took great joy in pleasing women sexually and had no complaints in that department. Indeed I was often complimented not only on my ability to pleasure women, but to ensure they were sexually satisfied before I gained my own release. With each subsequent woman I would endeavour to be the best lover they had experienced and was often told that I was. I took pride in knowing I could please a woman and my ability to control my own orgasms helped enormously in ensuring I wasn't the typical '5 minute wonder'.
Then I met and eventually married a woman and, due to my own stupidity, things began to change. You see I was found out having had a short-lived affair. Without boring you with the details, suffice to say my wife wasn't pleased and gave me an ultimatum. I was to ask my best friend if he would like to have sex with my wife or the marriage was over.
Julie, my wife, had fancied Pete, my best friend, for as long as she'd known me and we both knew Pete fancied my wife. Julie said she could only forgive my indiscretion if she could 'even the playing field' - her words, and that as she fancied Pete and he fancied her he would be the ideal person to 'give you a taste of your own medicine'. Again, her words.
It wasn't an easy decision I had to make, lose my marriage (we had a child at that time) or ask my best mate to 'please' have sex with my wife. What complicated things further was the fact Pete and I, apart from being best friends since age 11, were also business partners - we worked with each other most days as well as drank together for an hour or so after work. However, I assumed Pete would say 'no' if I asked him anyway. It's one thing to fancy your best mate's wife, quite another to sleep with her - even if asked by her husband. I was sure our friendship meant more than a tumble between the sheets.
Unbeknownst to me at the time however, my wife had already spoken with Pete regarding the situation and had convinced him that it was my idea they should have sex with each other. I (much) later found out from Pete that Julie had visited him at our business premises when I was taking a day off (due to a tummy bug) and had asked him if he would be ok having sex with her because she wanted to fullfil a fantasy of mine - that of watching my wife being fucked by my best friend. I hadn't had any such fantasies of course, but Pete didn't know that. He told me later that my wife had convinced him it was my idea after she told him that I would not only ask him to fuck her, but also say 'please' when I did. And, to reassure him that my wife was ok with it too, she had given my best friend a blow job right there and then in my office.
Anyway, to cut a long story short, I did, with my wife present (at her insistence), ask my best friend if he would 'please have sex with my wife'. I didn't want our marriage to end and felt confident he would say no. He didn't. Instead he asked me why. Julie had told me to say to Pete it was my biggest fantasy to watch her with another man and that he would be the safest choice, being best friends etc. When I told Pete this he said I was a bit of a pervert, but that he'd love to fuck my wife, if she didn't mind. Julie, sitting between us at the time, said if it's what I really wanted then she would be happy to help fulfill my fantasy.
It wasn't my fantasy! I didn't want to watch! It was my wife's way of getting back at me for having a fling, but I couldn't say that to my best friend.