Three short lines list three overwhelming feelings, and then a single sentence explains them all: "All because she loves too much." The reveal changes how we read everything before it. What looked like a catalogue of suffering turns out to have one source, and that source is love.
The feelings are described through the body and through size. Sadness is so strong that tears can't fall, as if it has gone past crying into numbness. Anger is physical, so heavy it makes the muscles ache. Fear is the biggest of all, an ocean with no shore, with no edge and nowhere to stand. The speaker seems to be watching someone else, "she," rather than describing their own pain, though the poem doesn't say who she is. The mood is raw and heavy, with a quiet kind of sympathy. Love here isn't gentle or comforting. It hurts, and the poem seems to say that caring deeply carries a real cost.