https://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_336692/
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Translated by CarlJPT, commissioned by me.
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I Kept Watching While a Man Made My Wife Cum Over and Over Prologue

>wife started dating her future husband
>bf/husband bumped into a bunch of bad guys
>bad guys do the classic extortion threat
>wife/gf noticed one of the bad guys was her ex
>it turned out she never fucked her ex before and was still a virgin at that point
>the ex pulled the classic "if you want to save your bf, you know what to do"
>gf/wife got fucked by the ex while thinking this is all for the bf's sake
>bf/husband did nothing the whole time
From then on, it's history as we knew it.

Japanese RAW
Chapter 1: https://e-hentai.org/g/1808003/ee7844009b/
Chapter 2: https://e-hentai.org/g/1989114/9cceae0126/
Chapter 3: https://e-hentai.org/g/2107584/6a8791b5ab/
Prologue: https://e-hentai.org/g/2810832/00c57e09f9/?p=5 (pages 102-119) (this one)

CHINESE translation:
Chapter 1: https://e-hentai.org/g/2328314/1d222ef934/
Chapter 2: https://e-hentai.org/g/2012490/7ba5b8f819/
Chapter 3: https://e-hentai.org/g/2335217/c891d418a8/
Prologue: https://e-hentai.org/g/2816777/e03639144f/ (pages 102-119)

KOREAN translation:
Chapter 1: https://e-hentai.org/g/1809647/e33cce11e8/
Chapter 2: https://e-hentai.org/g/1989828/b6018d3696/
Chapter 3: https://e-hentai.org/g/2120679/6cd6a23f0e/
Prologue: https://e-hentai.org/g/3170314/1a623bc34f/

ENGLISH translation:
Chapter 1: https://e-hentai.org/g/1812173/82aa4c3d6a/
Chapter 2: https://e-hentai.org/g/1997617/6552d71f55/
Chapter 3: https://e-hentai.org/g/2118098/1b01a2702c/
Prologue: this one

SPANISH translation
Chapter 1: https://e-hentai.org/g/2012034/6ad25312b7/
Chapter 2: https://e-hentai.org/g/2012041/6146bf5cee/
Chapter 3: https://e-hentai.org/g/2285059/fb3d1a42c4/
Prologue: https://e-hentai.org/g/2814595/634aa6480c/ (pages 98 to 115)

I feel like I have already read the English translation for this..

Base +2