The poetry of E. E. Cummings is incredibly unique in the way that it uses language and apparently breaks fixed rules of English to challenge readers and make us see objects and actions in completely different ways. You might want to consider the use of imagery in this poem as an example of this. Note the way that the poem talks about things "which i cannot touch because they are too near." The paradoxical nature of this statment is obvious and helps us appreciate the metaphysical nature of the style of this poem, which serve to reinforce the central aspects of passion and love.
In addition, consider the way that the "frail gesture" of the speaker's beloved can completely "unclose" him, in spite of her lack of strength. Nature imagery is also used to express the power that the speaker's passion for his lover has over him. Consider the following example:
though i have closed myself as fingers,
you open always petal by petal myself as Spring opens
(touching skilfully, mysteriously) her first rose
The speaker compares himself to a flower and his lover to the force of the seasons and the weather in unfurling his petals and forcing him to bud. Such imagery thus reinforces the strength of the lover's power over the speaker, as she is able to wield such power over the speaker in spite of the way in which the poem emphasises her weakness, frailty and diminutive stature.