Lyric discussion by maqsimillion 

Cover art for October lyrics by A-Ha

Distance causes loneliness. A long distance relationship. Or more likely, a relationship that was ended by her as she moved away. He is still holding on and somewhat bitter. Feels lonely but also out of pride says that he has learnt to live by ignoring his loneliness and she (who perhaps is still in touch with him as a 'friend') shouldn't worry.