The most frustrating thought for a woman is while doing sex she finds your penis is not as strong after inserting it. This makes her feel awkward and she may lose patience or interest in sex.
She may think why does my man lose his hard-on?
Sex is all about the interest that a woman generates in a man. If she is revengeful and considers it to throw tantrums while doing sex then none of the men will take any interest in doing it.
https://www.storeboard.com/blogs/health/why-does-my-man-lose-his-hard-on/5751839