More from the Intimations Ode (source of prior quote; here is the end of the ode):
Thanks to the human heart by which we live,
Thanks to its tenderness, its joys, and fears,
To me the meanest flower that blows can give
Thoughts that do often lie too deep for tears.
“Meanest” for Wordsworth means most ordinary—say, a dandelion. The whole poem is to show that we are given intimations of our eternal existence through our remembrance of childhood and through nature—they together show us, or at least remind us, that we “perish never.” The original poem isn’t about romantic love at all, of course, but it works beautifully in the film.
Thank you for the insight.