Three lines of suffering come first, and only afterwards does the poem say what caused them. It sets out sadness, anger and fear in turn, then ends with the source: "All because she loves too much." The central idea is that love, when it overflows, doesn't feel warm or generous from the inside. It feels like being flooded, weighed down and shut in, and nothing in the poem offers a way out.
Each emotion is blocked from doing what it normally does. Sadness is "so intense that tears won't fall," a paradox, since we expect great sadness to bring tears. Here the feeling is too big to be released. Anger is "so heavy your muscles ache," which turns it into weight. The ache suggests clenching, tension with nowhere to go. Fear is "an ocean with no shore," the cruelest image of the three, because a shore is exactly what a drowning person looks for. Sadness can't weep, anger can't discharge, and fear can't escape.
The lines also move from inside to outside. Tears belong to the eyes, muscles to the whole body, and an ocean is something that "surrounds" you from beyond your skin. The feeling spreads from one point on the face to the limbs and then to the whole horizon. There is a link of water, too. The tears that refuse to fall in the first line seem to come back, enormous, in the third. That is my reading rather than anything the poem states, but held-back water doesn't vanish, it gathers.
The grammar changes with the images. The first line uses the full "so… that" pattern. The second drops the "that" and becomes more clipped. By the third, the pattern is abandoned for a simile, and the line stretches out to become the longest of the three, as if it had grown to ocean size. The opening words "Sadness," "Anger" and "Fear" are bare abstract nouns with no one attached, so the emotions arrive before any person does. A person appears only in "your muscles," and it is "you," which pulls the reader into the feeling. Then the last line switches to a distant "she."
That switch is the poem's hinge. "You" brings us close, while "she" steps back and makes the suffering someone else's, or perhaps the speaker's own seen from arm's length. We are never told who she is, and the vagueness lets her stand for anyone who has loved past the point of safety. The tone of the last line is just as open. "All because" could be sympathy, exasperation or accusation, and it sounds almost like a shrug at how small the cause seems next to the cost. "Too much" implies a measure, and the poem doesn't say who set the limit or whether love can really be excessive.
There is no rhyme and no steady meter, which suits the subject, since neat chiming would feel like comfort and the poem gives none. It relies on emphasis instead. The first line ends on three blunt monosyllables, "tears won't fall," that land like a closed door. The second ends on "ache," whose hard "k" stops the line short. The repeated "so" works as an amplifier, pushing each feeling past the point where it can be contained. The closing line is made of plain, one-syllable words and has the flatness of a verdict, with none of the lyrical stretch of the line before.
The poem's significance lies in how much it does in just twenty-seven words. Love poems usually celebrate, and this one counts the cost. It also withholds consolation. Nothing in it suggests the tears will fall, the muscles unclench or the shore appear. Even the title is missing, replaced by three asterisks, which gives the piece the feel of a fragment lifted from something larger. Its force comes from the delay: we feel the weight first, and only then learn that it was love all along.