Hello Mefisto. I don't think this is true. Although i have to admit that i am not an expert for women orgasms, i had only sex with one woman in my life. But i also have to say that it was really good and we both enjoyed it very much. And the most important thing concerning your question... we both were far from beeing rich
In my opinion she wasn't the right one for you if she dumped you only for a richer guy. Hope this helps a little bit.