My sister has been dead for 5 years, we were very close. She had a little boy who's father (my brother in law) has been raising him, he has recently moved on and started a new relationship. I know this must sound so pathetic and unreasonable but I'm so angry and upset when I see on social media or hear of this woman spending time with my nephew. I am literally sat here crying because they went out as a "family" for my nephews birthday. I just keep thinking that it should be my sister and how fucking dare they basically replace her?! And I know that is totally unfair of me. Can anyone relate?