we're standing at the gate you'll meet the darker fate" makes me think that the other is using various abusive acts mostly manipulation to keep the relationship together, but the narrator knows that the other is in the wrong."your purity and rage, your passion and your hate" makes me think of a love/hate situations. The other has a rage and has violated the narrator in some way, then played the victim and acted like they were very sorry."you promised more than bliss, with your god and with your kiss" the narrator feels cheated by what the other has said and also by how the other has changed the narrator during the relationship.