i think its about the parting of an idea or attitude that used to comprise him; but he has new ideas-like seeing the world through new lenses.
these new lenses he is seeing the world makes it harder to relate to his partner.
he smiles out of an epiphany about himself-like an ah-ha moment.
but the glass is empty-cause there is no connection in the relationship anymore.
and the rest of the lyrics have to do with coping withs new way of seeing-part of it having to give up his partner for someone he can relate to.
i think its about the parting of an idea or attitude that used to comprise him; but he has new ideas-like seeing the world through new lenses. these new lenses he is seeing the world makes it harder to relate to his partner. he smiles out of an epiphany about himself-like an ah-ha moment. but the glass is empty-cause there is no connection in the relationship anymore. and the rest of the lyrics have to do with coping withs new way of seeing-part of it having to give up his partner for someone he can relate to.
its a really sad song.