Don't worry about the family that ignores and acts like you don't matter. Love the ones who are always there for you, no matter what. this is So true. You should accept this rejection and move on.
You find another family or other support people such as a few good friends who meet your need to belong.The other ones are missing out in making great memories. A normal function of emotion is to enhance memory in order to improve recall of experiences that have importance or relevance for our survival.