Does getting even with a cheating partner ever actually make the hurt go away?

Why do certain actors, despite their talent, develop reputations that make others unwilling to work with them again?
Why do narcissists hate themselves more when they can't find a partner as good as their previous "supply"?
How do you support family members who are grieving deeply at a funeral, especially when you're grieving too?
Why are conversations about gender often expected to prioritize men's feelings over women's experiences?