you guys are right when you say it speaks for the crew members
but dont forget, when we hear it in the series, its during the time that faye has run off and left the bebop and the others are all sulking in her absence, albeit perhaps unadmittedly
so although yeah its versatile and it can easily refer to the relationships you mentioned, i believe it more specifically references the deep, unspoken feelings the bebop have for faye at the time
of course theyd never tell her so the series uses this song to let us know how they feel
you guys are right when you say it speaks for the crew members but dont forget, when we hear it in the series, its during the time that faye has run off and left the bebop and the others are all sulking in her absence, albeit perhaps unadmittedly so although yeah its versatile and it can easily refer to the relationships you mentioned, i believe it more specifically references the deep, unspoken feelings the bebop have for faye at the time of course theyd never tell her so the series uses this song to let us know how they feel