Honestly, if you are getting this stressed out over facebook, you really just need to stay off of it. If you insist on staying on it, you just need to enjoy the people you interact with and not worry about the rest. Instead of focusing on who you don't interact with, focus on those you do. I'm on facebook and I haven't got a clue who may have ignored me and it really doesn't matter to me. You are really putting too much weight into this. Think about all those people who DO want to interact with you. Don't waste your energy on the rest.