The speaker is caught in a relationship that keeps swinging between closeness and distance. One day the two people are inseparable, the next they can barely look at each other. They talk, then run out of things to say. The speaker's plea is simple: "It's inconsistent / I want it persistent."
The poem gets darker in the middle, where the couple hurt each other almost without meaning to, imagery of bullets and extra arms suggests, and then try to repair the damage. The all-caps lines make it feel like a voice straining to be heard, yet the speaker admits "I'm fine" is a lie. That small confession shows how much is being hidden.
The closing image is the most memorable. A cookie dipped in tea is simple and sweet, but left too long it crumbles. That is how the speaker sees the relationship now. The mood is tired, hurt, and wistful, full of longing for how things used to be.