This is true, in college I had a roommate with a HUGE cock, thick 9", who would constantly "sport fuck" women he picked up at bars. I heard him fuck them for an hour at a time and it was clear all he did was pump them and dump them like your wife's big cock lover. No pretense of love, care, tenderness, etc., just random pussy being slain by his big tool. I fucked one of his conquests a few weeks after he fucked her and she was a cool girl, she told me that even though my cock was a little more than half his size I was a much better lover and made her cum more. None of the girls he fucked ever came back for more. He finally married the one that did. She was a tall, thin, blond bimbo who was incredibly dumb, but had a pussy that could take his slamming her for an hour and still be ready for more, porn-star like. He was amazed by her... until it got old. She married him mainly to make him move away, have kids, and support her. Now that I think about it maybe she was not that dumb after all. He works like a dog while she sits at home and doesn't even fuck that much any more, she got what she wanted and he's tired of what he got. He did fuck a lot of other guys' girls and most of them went back to their men and treated them better knowing that a big cock is just a big cock - it made them realize that their men were so much more than that. So your story is not unique, it happens a lot because a lot of big cock guys are assholes who are nothing but stunt cocks and teach women lessons. As a bonus it is pretty hot for us cuckolded guys knowing our women have experienced much bigger cocks stretching them out before they came back to us... those sluts!