embracing aotearoa

How can anyone feel lonely even though they are surrounded by their friends? It sounds so contradictory but it does happend.. Its that kind of thing where u look around you and hear buzzes of ppl laughing playing and having fun..but u soon realise that you aren't part of them..you stay quiet for a while and wait..u soon realise that no one bothers talking to you unless u talk to them..Its like they are in a different world from you and u are left alone..