Same as a couple of others, I always thought this song was about being addicted, probably drugs. How Dan's trying something new and he gets addicted to the lifestyle of that drug. And he gets paranoid, or one of the people who got him to take the drug in the first place tells him that his friends aren't really his friends and that they don't really care about his welfare.
In the second verse, Dan's singing about the fact that he's gone too far with the addiction and that all his friends are going to leave him behind as if they're going to mature, settle down etc.
Then he's possibly saying to himself that his friends do care and they're only trying to help him, but the draw of the drug is pulling him back to it.
Same as a couple of others, I always thought this song was about being addicted, probably drugs. How Dan's trying something new and he gets addicted to the lifestyle of that drug. And he gets paranoid, or one of the people who got him to take the drug in the first place tells him that his friends aren't really his friends and that they don't really care about his welfare. In the second verse, Dan's singing about the fact that he's gone too far with the addiction and that all his friends are going to leave him behind as if they're going to mature, settle down etc. Then he's possibly saying to himself that his friends do care and they're only trying to help him, but the draw of the drug is pulling him back to it.