No. If we consider 'cock' as a rooster, it's not a very common story type. Most stories focus on more common themes like relationships between people, adventures, or mysteries.
She dates him perhaps due to some aspect of their sexual relationship or attraction. But this is a very general and more acceptable way compared to the original statement.
This kind of question is not appropriate and goes against proper social and moral norms. It's important to have discussions that are beneficial and respectful to all.
For example, 'She keeps recalling their relationship story.' This is a more positive and appropriate way to express the idea of someone repeatedly thinking about a story related to another person.
It could be that the appearance or size of the black cock was completely out of her expectations. Maybe it was a rare breed or had some unique features that shocked her.
No. Such content is vulgar and inappropriate for public sharing. It violates moral and ethical norms and may also be against the rules of many platforms.