Nobody in this poem is unkind, and that is exactly the trouble. The speaker is surrounded by someone who notices, asks questions and offers comfort, yet ends up lonelier for it. The heading, "The complex simplicity of human interaction", describes the poem's method well: very ordinary words are used to show a very tangled problem.
The opening four lines set up the gap between what is visible and what is felt. "You see the smile / You see the tear / But not the anger / And not the fear." The repeated "You see" makes the other person a watcher, and the grammar splits the world in two. Smile and tear are on the surface, anger and fear underneath. It is a neat touch that a tear counts among the things seen. Even a visible sign of distress gives a misleading picture, as if the onlooker catches only the more presentable emotions. These are also the poem's tidiest lines. "Tear" and "fear" rhyme, and the short, balanced phrasing feels almost like a rule being stated.
Then the poem turns to the everyday. "The milk's been spilt / The fish has died" sets a household accident beside a small death, and the flat tone gives both the same weight. The echo of the old advice about not crying over spilt milk hovers behind the first line, though the poem never says it. Whatever has gone wrong, small or large, the response is the stock question: "But yet you ask / If I'm alright." The slightly clumsy "But yet" suggests exasperation. The evidence is all there, and the question still arrives as a formula. The offers that follow, "a helping hand" and "a shoulder here for leaning", work the same way. They are body-part clichés, generous in intention but worn smooth, kindness handed over ready-made.
The pivotal sentence is the most awkward, and the awkwardness is useful. "But sadly you do not realise / That I don't really want it / To know how I truly feel." The line break leaves two readings. The speaker may not want the help at all. Or the speaker may not want the help to be a route into their private feelings. Either way the lines grow longer and more hesitant, with "sadly" and "really" and "truly" softening the refusal. Someone who dislikes being the centre of a fuss might speak this way, wanting to turn comfort down without seeming ungrateful.
The ending carries the poem's best idea. "A mile has to be completed / In my size 8 flip-flops / When you have size 9 feet." The familiar saying is about walking a mile in someone else's shoes, and the poem never quotes it. It trusts the reader to supply it, then twists it. The speaker's mile cannot be shared, and the passive "has to be completed" makes the journey a duty with no helper. The details are well chosen. Flip-flops are light, open and unprotected, a fitting image for someone feeling exposed. And the gap between sizes 8 and 9 is tiny. The other person is not a stranger with enormous boots but a near fit, close enough to seem able to understand and still not close enough to do so. That small difference is the "complex simplicity" of the heading in a single image.
In form, the poem is one unbroken block of sixteen lines with no stanza breaks, which suits a speaker who feels there is no room to breathe. The rhythm is conversational rather than metrical, with short lines at first and longer, prose-like ones at the end. The rhyme thins as it goes: "tear" and "fear" chime clearly, "died" and "alright" only faintly, and the final lines don't rhyme at all. Whether or not this was planned, the effect is of order giving way to something less resolved. The verbs shift too, from "see" to "ask" and "offer", and finally to "realise" and "know". The poem moves from looking to understanding, and understanding is the one thing nobody can hand over.
The poem is worth reading for how it turns a cliché inside out instead of repeating it. It also makes a point many readers will recognise: being cared for and being understood are different things. Its sympathy for the well-meaning friend is part of what makes it honest, since the failure it describes is no one's fault.