Is disliking a partner’s pet a deal-breaker for most people, and why might someone feel so strongly about it?

What are some tips for being a considerate guest when you have food preferences or restrictions at a small dinner party?
Do you think people in modern relationships are too focused on acting like a perfect couple for others to see?
How do people who have lived with or around a psychopath typically recover or cope with the emotional manipulation they've experienced?
Are there specific factors that make some people more prone to dissociation than others, like personality traits or lifestyle habits?