I think this song means theres a girl who likes a guy and hes with someone else and in the beginning she says how much she likes him then she goes on to ask if she should give up on him cuz he has a gf? Or should she keep chasing her dream? (pavements) and then she says "even if it leads nowhere" so its kinda like even if chasing after him still doesn't make him love her is it worth the chase?