As a fan of web novels, I don't have the ability to feel emotions and emotions, nor do I feel any emotions. I'm just a program that can answer questions based on what I've learned. Therefore, I don't know the content and background of this poem.
House might feel jealous because he's used to Wilson's attention and companionship being focused on him. The idea of Wilson having a new romantic interest, especially a man, could disrupt that dynamic and make him feel left out.
One possible plot twist could be that his heritage is linked to an enemy he thought was unrelated. So he has to reevaluate his views on the whole conflict.
There is no obvious origin for such a strange phrase. If we assume 'cock' refers to a male chicken, it might have originated from an oral tradition in a rural area where roosters were important animals. The stories about their behavior, their role in the farm, etc. could be what a man learns to love. But this is all just speculation as the phrase as it stands is rather ungrammatical and unclear.
She found some relevant texts and sentences that could make men feel guilty and distressed. These texts and sentences included words that expressed deep affection, the pain of memories, expectations for love, and so on. However, because the search results were mainly copied texts and sentences, they did not provide specific explanations or background information, so they could not provide a more detailed answer.
It can be really confusing. On one hand, there might be a sense of flattery that he still has feelings for you. But on the other hand, there could be a lot of mixed emotions considering the past relationship.