I feel like a loner now. I do have friends.. but sometimes, I do feel leftout.. at times, they won't really care about me. I feel like I don't exist in this world anymore. Help me:(

Think about the reasons that you are friends with them? Is it because you enjoy hanging out with them? Are they good friends to you? Do they support you, encourage you, help you out when you need it?

Are they in a group you are wanting to fit in with for some reason? Do you sometimes feel left out because they actually leave you out of what they are doing?

After you give it some careful thought, decide if they are the type of people you really want as friends. If not, then be polite to them, but you don't have to continue to be "friends" with them. Maybe some different people would be a better choice.