Lyric discussion by formaldehydeKAT 

Cover art for Spider lyrics by Oingo Boingo

the spider and "him" are the same.

it's from a perspective looking out at himself.

he is in his darkest and most miserable place because his lover left him and already moved on while he's still in love with her.

he misses her and wants her back and tries to tell himself he should be happy for her finding someone else.

this song always gives me chills and i relate to it a lot.